Oh, dude, let me break out my calculator for this intense math problem. So, if you got 72 percent right out of 50 questions, that means you answered 36 questions correctly. But hey, who's counting, right?
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Well, if you had 50 questions and you got 72% right, it means you answered 36 questions correctly. So, sharpen those pencils and try again for the ones you missed. Better luck next time, champ!
Getting 72 per cent right means if you had 100 questions you would have got 72 correct. Since there were half as many questions (50), you would have got half as many (36) correct.
The probability of getting all 10 questions right is, P(10) =(1/2)10 =0.0009765...9 questions right, P(9) =10C9 ∙(1/2)10 =10∙(1/2)10 ~ 0.009765...8 questions right, P(8) =10C8 ∙(1/2)10 ~ 45∙(1/2)10 ~ 0.043945...7 questions right, P(7) =10C7 ∙(1/2)10 ~ 120∙(1/2)10 ~ 0.1171875...The probability of passing the test with any of the grade is the sum of all theabove; P(passing)~ 0.1719 ~ 17.2%
There is 1 right answer out of 5 possible answers, so the probability of guessing it correctly is 1/5 or 20% or 0.2.
To determine how right or wrong their answer is.
To solve percent all one must do is to move the decimal of the percent over two places to the right, so 82 becomes .82, then simply multiply it by the other number and one gets their answer.Thus:1,500 * .82 = 1,230
It depends on what exactly the conditions are. If you mean from a 52 card deck, drawing one card right after the other, then the chance that they will be those two cards in that exact order is 1/52 * 1/51. This is pretty much a percent of a percent. .00038, or about 4 percent of a percent.