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 âˆ™(1/2)10 =10âˆ™(1/2)10 ~ 0.009765...8 questions right, P(8) =10C8 âˆ™(1/2)10 ~ 45âˆ™(1/2)10 ~ 0.043945...7 questions right, P(7) =10C7 âˆ™(1/2)10 ~ 120âˆ™(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.
45 were correctly answered
138 answered correctly.
Divide how many questions you got right (11) by how many questions total there was (14). Then multiply it by 100. 11/14=0.78....... 0.78 x 100=78 YOUR ANSWER IS 78%
Designate the number of correctly answered questions as r. From the problem statement, r = 92 % of 28 = 0.92(28) = 25.76. If partial credit is allowed, this probably means that there were 25 questions completely right and one more that was considered three-fourths right.
If she answered 75% of them right she would have answered 246 of them right and 82 of them wrong.
If you answer 5 out of 12 questions right you have answered approximately 42% of the questions correctly. This can easily be figured out by dividing 5 by 12.
You would need to answer 68 questions correctly.
10% is right 40 of 50 would be 80%
Assuming that you answered 45 questions and got the other 43 right, that would be 96 percent.
Then your question will not be answered.
You have to divide the number of questions you answered correctly of the number of total questions then multiply by 100. (#correct over total#of questions) x 100 Or, you divided 100 by the total number of questions, then multiply by the number you got right to find your percentage.
138 questions right and 12 questions wrong