Thursday, February 4, 2010

Wts the probability of getting a perfect paper from a test of 6 true and false questions?

help pls!!!! i jut need to know the steps to how to solve it so i know how to solve another one when i see it XD ty!!Wts the probability of getting a perfect paper from a test of 6 true and false questions?
Assuming one did not study and answered randomly, there is a 1 in 2 chance of any answer to be correct, and since there are 6 questions, it is 2*2*2*2*2*2, or 2^6, or one chance out of 64.Wts the probability of getting a perfect paper from a test of 6 true and false questions?
now here the key is to divide the paper into six questions


for each question the probability of answering it correct is 1/2


so for answering all six questions correct you will have to multiply the probability of getting each question correct that is


(1/2)^6 = 1/64


thats your answer








bird you got that wrong first of all you have to multiply 1/2 to itself 6 times not (1/2)*6...........even if you do ur way (1/2)*6=3 not 1/12.......and the probability cannot be greater than one
50% to the power of six.





50% = 50/100 = 1/2





1/2 to the power of six is 1/64.
1 in 12. 1 in 2 for true and false, x 6 for each prob

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