# Math

13. A true or false test has 8 questions. What is the probability of guessing the correct answers to all the questions?

A. 1/10
B. 1/16
C. 1/64
D. 1/256

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3. 41
1. each individual question has a prob of 1/2 of being correct
so you want (1/2)(1/2) .... (1/2) --- (8 times)
= (1/2)^8
= 1/256

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posted by Reiny
2. Yes I think so too

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