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Why is there no e grade?

In the 1930s, as the letter-based grading system grew more and more popular, many schools began omitting E in fear that students and parents may misinterpret it as standing for “excellent.” Thus resulting in the A, B, C, D, and F grading system.

rd.com - Why There's No E in the Grading System | Reader's Digest

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A, B, C, D, F... wait, what?

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If you’ve ever wondered why you’ve never gotten an E on your report card, you’re not alone. Most grading systems in the United States typically go by A, B, C, D, then F. So, what did E do to be skipped? As it turns out, E used to be a standard grade. (Here are the secrets of straight-A students that all scholars should definitely steal.) According to the Washington Post, “The first letter grade ever given in the United States, according to historical records, was a B received by a Harvard University undergraduate in 1883. There is no indication of how he felt about the grade, but that simple way of judging student work quickly became popular.” After that, other institutions started catching onto the concept of grading with letters. In 1887, Mount Holyoke College in Massachusetts was supposedly the first school to continue the use of a letter-based grading system. An A was equivalent to 95-100%, a B was equivalent to 85-94%, a C was equivalent to 76-84%, a D was 75%, and an E was anything below a 75%—which meant failure. A year after Mount Holyoke’s grading system was put into place, they changed each letter so they represented different percentages. According to todayifoundout.com, “B became anything from 90-94%, C was 85-89%, D was 80-84%, and E was 75-79%. Below that, they added in the dreaded F.” In the 1930s, as the letter-based grading system grew more and more popular, many schools began omitting E in fear that students and parents may misinterpret it as standing for “excellent.” Thus resulting in the A, B, C, D, and F grading system. According to mentalfloss.com, “Recent surveys show that letter grades are [now] the most common grades used in elementary and secondary schools and two- and four-year colleges and universities.” Just reading the history of letter grades probably boosted your GPA, but are you smarter now than you were in high school? Take this quiz to find out!

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How do you bet with 3 numbers?

For example, a three number bet means dividing 36 by 3 to get 12, then subtracting 1 to equal 11. The payout rate for a three-number bet is therefore 11:1, meaning a $10 bet would result in a $110 payout if you won.

casino.org - A guide to understanding roulette odds - Casino.org

Before jumping into odds and payouts, we’d recommend familiarizing yourself with roulette bet types first, or this might get confusing. Being able to recognize the names of different bets and where you’d place your chip on the table for each one will be especially useful. For each bet type, the potential payout odds in roulette are stated in the form of x:1. This means you’ll win x dollars for every 1 dollar you bet. For example, a single-number bet offers a payout of 35:1. So, if you win, you’ll get your dollar back plus $35.

Calculate your roulette winnings with our roulette payout guide

The roulette payout chart below shows the odds for the different bets you can make in both European roulette and American roulette, as different roulette variations affect the odds. All the calculations are done for you, so you can check your potential roulette winnings at a glance as you play. Note: If you’re curious about the math behind these, it’s not too complicated. Divide the number 36 by the number of squares your bet covers on the table. Then, subtract 1 from that figure to get the payout odds. For example, a three number bet means dividing 36 by 3 to get 12, then subtracting 1 to equal 11. The payout rate for a three-number bet is therefore 11:1, meaning a $10 bet would result in a $110 payout if you won.

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