True false test has five questions

[Pingu]

The answer to each question is a guess
There are two possible answers for each question
How many different ways are there to complete the test?
I thought that it was 2 types of answers times 5 questions means 10 different ways to complete the test. I was wrong. How do I find out the correct answer for these types of questions? Also what would be the probability that all five questions are answered correctly?

 

[mathfun]

How many different ways are there to complete the test?

there are 5 questions in total, 2 possible answers for each. 2x2x2x2x2 = 2^5

Also what would be the probability that all five questions are answered correctly

1/2^5

 

[Pingu]

Thanks