Free Mathematics Tutorials
Grade 7 math word problems with answers are presented. Some of these problems are challenging and need more time to solve. The Solutions and explanatiosn are included.
Grade 7 math word problems with answers are presented. Some of these problems are challenging and need more time to solve. The Solutions and explanatiosn are included.
Nearly a year after Election Day, Facebook’s role in our modern political infrastructure is finally coming into focus.
We now know, for example, that Russian-linked Facebook ads reached roughly 10 million Americans during the presidential election season, and that Russian government actors posed as Americans on Facebook to push divisive social issues like gun control, gay rights and the Black Lives Matter movement. We also know, thanks to a recent interview with Brad Parscale, President Trump’s digital campaign director, that the Trump campaign considered Facebook’s advertising microtargeting tools essential to its victory.
But there is much more to know. Facebook has addressed some election-related questions, and may share more next month when its executives testify in front of the House and Senate intelligence committees. These investigations may focus solely on Russian interference, but they could also produce valuable information about how Facebook operates as a company, how it views its role on the political stage, and how it plans to safeguard its platform from malicious activity in the future.
The conversation about Facebook would benefit from more facts, and less speculation. So this week, I sent a list of some of my unanswered questions to Facebook. Two representatives — Alex Stamos, Facebook’s chief security officer, and Joe Osborne, a company spokesman — responded to several questions in some detail. The company declined to answer several other questions, but I include those here as well, in hopes that they might one day be answered.
Below are my questions, followed by Facebook’s responses, where applicable.
1. In an April 2017 white paper, your security team disclosed an incident during the 2016 election in which “malicious actors” were discovered to be using fake Facebook accounts to promote links to stolen information. The paper did not name the actors, but it was later revealed that this referred to a coordinated campaign to promote emails that were stolen from Democratic National Committee officials by Russian hackers and published by WikiLeaks. It has also been reported that Facebook’s legal and policy teams pressured the security team to exclude any mentions of Russia from their report. Why did they want to keep this information from becoming public?
Alex Stamos, chief security officer, Facebook:
In our April white paper, “Information Operations and Facebook,” we described the activity that we detected from a sophisticated threat actor that was spreading stolen information about specific political targets in the run-up to the U.S. election and using it to feed press stories that they could then amplify. We took steps to disrupt this activity and reported details to the relevant authorities.
In this white paper, we noted the challenge of attributing threat activity to foreign actors ourselves, but we specifically referenced the assessment of the U.S. government that this actor was tied to Russia’s intelligence services. This was an accurate statement of what we knew about this particular actor at the time, and it appropriately relied on the U.S. intelligence community’s public analysis.
We have been forthcoming at every opportunity about what we know about these information operations. In addition to our white paper, last month we disclosed advertising activity on our platform that we believe is linked to the Internet Research Agency, a different group from the one we described in April. We undertook this research on our own, and we named the group based on our best assessment because we weren’t aware of a comparable public report from the government.
2. Related to the above question: In July 2016, WikiLeaks complained that Facebook was censoring links to a page on its website that hosted the hacked D.N.C. emails. Your chief security officer, Alex Stamos, replied to WikiLeaks (in a tweet that has since been deleted) saying that the issue had “been fixed.” Links to WikiLeaks were subsequently restored. Did Facebook’s security team manually override a tool that flagged these fake accounts as suspicious? If so, who was responsible for the decision to restore access to WikiLeaks, despite having detected a suspicious campaign to promote its stolen documents? Did you notify law enforcement that your security team had intercepted a coordinated influence campaign?
Mr. Stamos: The temporary block of some WikiLeaks links by our automated spam-fighting systems had nothing to do with information operations. It was caused by WikiLeaks posting thousands of raw emails — several of which contained links to malicious phishing and spam sites found in industrywide block lists. We removed the block after we determined that the WikiLeaks links themselves were not harmful.
3. You recently announced you were adding 1,000 human moderators to the team that reviews Facebook ads. How many human ad reviewers did Facebook employ in November 2016? And what percentage of political ads that ran on Facebook during the 2016 election cycle did they review?
Joe Osborne, Facebook spokesman: We don’t usually share the sizes of specific teams at Facebook. Our teams review millions of ads around the world each week, and we use a mix of automated and manual processes. We’re not sharing an exact break-out of the number of manually reviewed political ads.
4. Of the 1,000 human moderators you’re hiring, how many will be based in the United States? Will you be hiring moderators to review ads in non-English languages? What kinds of pre-hire screening will you do to make sure that these moderators are not affiliated with foreign governments, extremist groups, or others looking to influence the American political process?
Mr. Osborne: We are still working through where the moderators will be based, but likely across regions including the U.S., Europe and Asia.
5. You recently told advertisers that new ad campaigns that involved “politics, religion, ethnicity or social issues” would be reviewed by humans before being approved. What guidelines will reviewers be given about which ads to allow and which to reject? Will these guidelines be made public?
6. Your advertising policies allow advertisers to opt out of appearing next to content that involves “debatable social issues.” Which social issues do you define as “debatable,” and how did you make that call? Is your definition of “debatable social issues” globally consistent, or does it vary by region?
7. In countries with regressive social policies, such as criminalizing homosexuality, do you allow the local authorities to determine which issues are considered debatable?
8. Last year, ProPublica found that Facebook advertisers could exclude certain ethnic groups from seeing advertisements about housing, employment and credit, in violation of federal anti-discrimination laws. In response, Facebook announced it would no longer allow ethnic group targeting for those ad categories. Did you consider extending the ban on ethnic group targeting to all ads, including political ads? Did you consider that political campaigns might use ethnic group targeting to suppress voter participation among certain ethnic groups? (Trump campaign officials claim to have used targeted Facebook ads to suppress African-American voters in the weeks leading up to the election.)
9. Did you, at any point leading up to the 2016 election, consider adding disclosures to political ads that made clear who was paying for those ads? If so, why did you decide not to include that feature?
10. You have said you are committed to protecting election integrity and supporting democratic ideals. However, there have been reports that you have built tools to censor speech in certain authoritarian countries, such as China, where you hope to be allowed to operate. How will you choose which elections and democratic processes to protect? When promoting democratic ideals conflicts with your corporate goals, which will you prioritize?
11. Mr. Trump’s digital campaign director, Brad Parscale, has said that Facebook sent “embeds” to work inside the Trump campaign offices and help them use Facebook more efficiently. (You have responded that these offers are standard for political campaigns, and that you “offered identical support to both the Trump and Clinton campaigns.”) What kinds of work did your employees do on behalf of the Trump campaign? Were they involved in writing or editing any of the campaign’s Facebook posts? Were they given page roles or posting rights on any Trump campaign Facebook pages? Were they authorized to report any illegal or suspicious activity they found in the course of their work? If so, did they make any such reports?
12. Your advertiser website lists “success stories” of political campaigns that have used Facebook advertising to increase turnout and win elections. Knowing that Facebook could be used to influence election results, why did you not use a United States presidential election as an occasion to build the proper safeguards to make sure that your system was not gamed by foreign or malicious actors?
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By the pool. At your sister’s soccer game. On a long family road trip. If you have the time, we have the study guide.
The Official ACT Prep Guide includes:
Get a taste of the ACT test with practice questions.
Familiarize yourself with the instructions and format, then review, analyze, and answer the questions to see if you’re correct—and why. Includes complete practice tests with scoring keys, and a writing prompt.
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Want to know what to expect on the ACT test? Sign in to ACT Profile to get free practice questions and answers from past tests. Explanations and tips are provided to help you solve each question. You also can sign up to receive a weekly email that provides each week’s questions.
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Writing Samples are provided as study aids for the optional writing test.
Get detailed information about each test section and what is covered.
The ACT measures the knowledge, understanding, and skills that you have acquired throughout your education.
The test contains multiple-choice tests in four areas: English, mathematics, reading, and science. Each of these tests contains questions that offer either four or five answer choices from which you are to choose the correct, or best, answer.
If you register for the optional ACT with writing, you will take the writing test after the four multiple-choice tests.
Carefully read the instructions on the cover of the test booklet.
Read the directions for each test carefully.
Read each question carefully.
Calculators may be used on the mathematics test only. Calculator Policy (PDF)
Pace yourself—don’t spend too much time on a single passage or question.
Pay attention to the announcement of five minutes remaining on each test.
Use a soft-lead No. 2 pencil with a good eraser. Do not use a mechanical pencil or ink pen; if you do, your answer document cannot be scored accurately.
Mark only one answer to each question, and for each question, make certain that you mark in the row of ovals with the same number as the question.
Fill in the oval completely, and make your marks heavy and black. If you change your mind about an answer, erase your first mark completely without smudging.
For each question, decide which answer is best.
Answer the easy questions first, and then go back and answer the more difficult ones if you have time remaining on that test.
On difficult questions, eliminate as many incorrect answers as you can, then make an educated guess among those remaining.
Answer every question. Your scores on the multiple-choice tests are based on the number of questions you answer correctly.You will not be penalized for guessing. It is to your advantage to answer every question even if you must guess.
If you complete a test before time is called, recheck your work on that test. Do not look back to a test on which time has already been called, and do not go ahead to another test. To do so will disqualify you from the examination.
When time is called on any test, lay your pencil down immediately and do not mark or alter any ovals on the test or continue writing the essay. If you do, you will be dismissed and your answer document will not be scored.
Writing test tips:
Scrivens sat at the end of an elongated red brick shoebox row of shops. There was a hardware store, a greengrocers, a hairdressers, a rather strange woman’s clothes shop – which for some reason sold toys – and finally Scrivens, a strange L-shaped grocery cum newsagents. It was here where you spent your pocket money. You’d lean your bike against the window and head in, straight to the angled display of chocolate bars. A sensory overload of colours, shapes and tastes. There are so many memories tied up with the first thrill of autonomy, to hold in your hand that coin which is yours, to do with what you want. What do you spend your money on? Sweets obviously!
They claim that 70% of chocolate bar purchases are impulse driven but there’s so much more to confectionery than the confectionery itself. Often those decisions are based just as much on what happened years ago, as it is on what is in the present. The texture and luxurious taste are only one small part of the nostalgic feeling that one associates with that indulgence.
Despite manufacturers constantly rebranding and repackaging trusted franchises, people have grown up with them and they are an integral part of peoples lives. You can’t underestimate the joy of running ones fingernail along the foil covered crevices of a four bar KitKat. The disappointment of getting the letter p, again, on your Smarties lid. The thrill of a free piece of cardboard with a Bounty or the anticipation of laying your Mars Bar on its front and disrobing it, revealing bit by bit your opulent quarry.
Whilst I have become a self-confessed chocolate snob, I acknowledge and appreciate the role that these bars have had in my life. So in a tribute to the everyday enemy foot solider in the battle of obesity, I decided to find the best ten chocolate bars of Britain. Obviously there has to be criteria. Without rules we’d be looking at confectionery chaos.
No solid chocolate bars – Dairy Milk, Yorkies and Buttons are all out.
It has to cost under a pound – so no fancy continental creation, or family sized treats.
No seasonal products – Cream Eggs a no go, despite being an annual event these bad boys are only (supposedly) available between Boxing Day and Easter.
Has to be currently available – No place for Drifters, Spiras or Treets.
Most importantly it has to be chocolate based – Jelly Tots, Tooty Frooties and Haribo are all firm favourites, but no chocolate, so no place on the list.
Invented in 1937 in Slough, it’s hard not to include this as the first entry on the list, it feels like the ultimate indulgence. I have spent many hours refining the best way to devour one. First chill the bar for 30 minutes in the fridge. Cut off the ends of the bar with a sharp knife, then lay the unwrapped bar on it’s top and make two incisions, where the sides meet the bottom layer of chocolate, along the length of the bar. Carefully chisel out the nougat section, so you’re left with the top, caramel and sides in a U-shape. Eat the nougat, fold in the sides and enjoy.
It’s the confectionery equivalent to a PG Wodehouse story. Each of its seven sections of fondant filling are enrobed in a crisp dark chocolate, reminiscent of when sartorial elegance was part of everyday life. It actually feels like you’re waiting with your Man at the railway station, ready for a spot of shooting in the country. It’s one of the few chocolate bars which carries in its taste, the heritage the brand has.
The brouhaha that went with the launch of Cadbury’s Twirl was simply a waste of time. There was already an incumbent on the coated rippled chocolate throne. It cost more than a Flake and tasted so much more like luxury, despite being made of Galaxy chocolate – which some have described as waxy, oily and cheap.
Overly sweet without any feelings of decadence, this nougat-biscuit combination has unique properties. If you feel like a Double Decker, there is nothing similar with which to replace it, should you not have one to hand. There are memories of raisins lurking in the biscuit base, but I’m not sure whether they were meant to be there.
Whilst other pocket money treats came in flimsy paper wrapper, Smarties lived in a sturdy cardboard tube. With its alphabet-embossed coloured plastic lid and beautiful smooth rounded edges, it was the perfect diameter for little hands. Now in a flimsier hexagonal tube, with more colours, the wonder of having that many sweets in one packet is undiminished.
Never has a snack item got the balance of chocolate to interior more correct than the Crunchie. From the golden wrapper to the rich golden interior – it’s a party in a bar. Due to its composition it’s impossible to eat without chipping the chocolate from the honeycomb for at least a part of the experience. There is something pleasingly gender neutral about the Crunchie.
Recently bought into the Dairy Milk stable, this was always sold as a seductive luxury item. Sensuous and seductive, from the gentle curves of the bar (which, for some reason, always reminded me of a Ford Sierra) to the unctuous caramel interior. Like all good treats, the Caramel shares the feeling that even though you’ve finished, there should be another piece left
Targeted at women and sold as a lighter option to the more substantial bars on the market, this is a mistake. Although these crisp malt and chocolate spheres are lightweight, it’s the sheer quantity that give them their gravitas. With so many in a bag, a good rhythm can be established. I did go through a phase – which lasted about 10 years – of counting the amount in every bag I ate, 13 was a bad day, 20 a very good one, normally it was 16-17.
Surprisingly high in calories and remarkably bland in chocolate satisfaction. None the less there is something very alluring about the twin bars of a Twix, least of all the ways in which to eat them. Do you bite off the caramel first, or the biscuit? Nibble or bite? It is always more satisfying than you think and whilst a lot of confectionary doesn’t quite live up to there billing, the Twix does.
Munchies are what Rolos want to be when they grow up. Carrying a premium price, each gold-tipped tube contains chocolate cubes filled with caramel AND biscuit! I always feel a touch nauseous after eating a whole pack, but take this as a sign of value for money.
JSC All Subject MCQ Suggestion Question With Answer 2018. The education system and structure of Bangladesh have three major stages-primary, secondary and higher educations. Primary education is a 5-year cycle while secondary education is a 7- year one with three sub-stages: 3 years of junior secondary, 2 years of secondary and 2 years of higher secondary. The private schools also receive strong financial support from the state.
জে এস সি পরীক্ষা ১০১৮ সালের সকল বোর্ডের সকল বিষয়ের MCQ প্রশ্ন ও উত্তর
The tertiary education (3-5 years) is provided through universities (34 public and 60 private universities) and affiliated colleges under the supervision of University Grants Commission. Establishment of private universities has gained momentum in recent years. At all levels, students can choose the medium of education from Bangla or English.
teachingbd24.com is such a website where you would get all kinds of necessary information regarding educational notes, suggestions and questions’ patterns of school, college, and madrasahs. Particularly you will get here special notes of physics that will be immensely useful to both students and teachers. The builder of the website is Mr. Md. Shah Jamal Who has been serving for 30 years as an Asst. Professor of BAF Shaheen College. He expects that this website will meet up all the needs of Bengali version learners /students. He has requested concerned both students and teachers to spread this website home and abroad.
UPDATE: May 18, 2017, 5:06 p.m. SGT Updated with the Ministry of Education’s new statement.
A math question apparently meant for 7-year-olds has left adults befuddled.
The bonus math question — which was first said to have originated on a first-grade level exam paper in Singapore — has been making the rounds on social media.
Singapore’s Ministry of Education (MOE) later told Mashable that there were in fact no examinations for Primary 1 students.
The question shows a circular puzzle with five numbers in it. There are four corresponding blanks that are meant to be filled in, but no further information is given on how to solve it.
Adults have been unable to solve it.
“Now that I can’t solve this, I feel super uncomfortable,” said user Kenny Eng on Facebook.
“Maybe Sheldon from the Big Bang Theory could have done this when he was seven,” said Facebook user Mingli Lin.
“I just finished my course on advanced applied math and I can’t solve this. Whoever set this is sick,” said user Jacky Wu.
The question first surfaced on an online forum, posted by a user who claims that it was a bonus question taken from a Primary One, or first grade, examination paper.
But Singapore’s Ministry of Education (MOE) initially couldn’t confirm this. “From the image, we are unable to ascertain if the question was from a school’s Primary 1 examination paper,” an MOE spokesperson said in a statement.
The MOE later told Mashable on Thursday that there were in fact “no examinations at Primary 1.”
However, the question bears a striking resemblance to one that has previously appeared on a math blog by Gordon Burgin, who calls himself an author of Maths Puzzles. (Mashable has reached out to Burgin for comment).
The two questions are almost identical, with only one difference. The bottom-left number in Mr Burgin’s puzzle is 20 instead of 2.
Image: gordon burgin
According to Burgin, the way to solve his puzzle is this:
Image: gordon burgin
In 2015, people in Singapore were similarly unable to solve a math question nicknamed “Cheryl’s birthday.”
The question was first reported to be a fifth-grade level question, but was later revealed to be a ninth-grade Maths Olympiad question.
So what is the answer to the original math question you ask?
Your guess is as good as mine.
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Zlloyd1, I know exactly what you mean! I hate assessment tests as well, particularly when they only give you an option between something bad and something awful. In those instances, just keep trying to chose the lesser of the two evils that more closely matches what you prefer. I personally think companies lose good people because of stupid assessment tests.
I lie on these things and fail. I tell the truth and still fail. wtf. whats sad is im an amazing person to work with/for but noone will ever know because of these stupid tests.
zlloyd1 – I am in the same position as you are. The assessment for target was painful to get through as 80% of the 2 choices I didn t agree with. IT was ridiculous.
Just Jill, I think those kinds of assessment tests are judging whether you are a social type of person or an analytical one so I d say the way to answer is dependent on the type of job for which you are applying. For example, if it s a sales job, I d answer being more social. If you are handling the company s taxes, answer more analytically. It s very job-type dependent.
What about the tests that ask what would your current or most recent employer say ranging from below other countries workers to much higher than your computer workers?
Sandi, I m not sure I understand the question. Are you saying that a test asked how your past employers would compare you and used examples that included worker from another country or computer workers ? If that s the question, I think it s awful that they asked such a question. It s insulting to workers in other countries (like they are somehow the complete and negative opposite of computer workers). and totally confusing for you. As far as how to answer it, if you really want the job, I d try to answer honestly about where you d place yourself in the range (tending toward a higher score than a lower one). Thanks, Kathy
i have trouble answering this question please help me
Wow, Sofia, I am sorry that you were asked such odd questions. No wonder you are confused about how to answer them! As far as how to answer them, I d be guessing, but for the 1st one, I d talk about how you will ensure that the ostrich eggs will sell successfully through merchandising, operations, marketing, etc. For the 2nd one, I d just trying to come up with something not controversial (like don t get into politics, religion or anything prejudicial), maybe something like, I don t believe that breakfast is the most important meal because I haven t been eating it for years and it makes me feel awake and eager to face the day. Regarding the 3rd question, about the tortoise and the leopard (or in America, we d say the tortoise and the hare), I would say that if the tortoise won it was because smart, steady work ensures success because you are not rushing and making mistakes. In general, think what the questions are trying to get to . in these questions, they are trying to see if 1) you can put a plan together to successfully sell something (the eggs), 2) you can deal constructively with people who have a different opinion and 3) you will be careful and methodical in your work.