# Math Help - Probability (I hate this stuff!)

1. ## Probability (I hate this stuff!)

A "true false" exam has 10 questions. Assuming that the questions are independent and that a student is guessing, find the probability that she gets 100%.

2. Originally Posted by rlwright
A "true false" exam has 10 questions. Assuming that the questions are independent and that a student is guessing, find the probability that she gets 100%.
The probability for each question (independant event) is .5
There are ten.
Thus,
(.5)^10=0.0009765625
Same as saying,
.0976565%