The probability of guessing the correct answer to a true-false question is 1/2 or 0.5.
Therefore, the probability of guessing the correct answer to all 5 questions is:
0.5 x 0.5 x 0.5 x 0.5 x 0.5 = 0.03125 or approximately 3.125%.
So the probability of guessing all correct answers is quite low.
A true-false test has 5 questions. What is the probability of guessing the correct answers to all of the questions?
1 answer