Heidi takes a true/false quiz with 6 questions, all equally likely to be either true or false. Answer the following questions in Description below.

Question

Heidi takes a true/false quiz with 6 questions, all equally likely to be either true or false. What is the probability that she:

a) gets exactly one question wrong?

b) gets all 6 answers correct given that she answered the first three questions correctly?

Answer 1

Depends on how deep she is into it.