SOLUTION: A test has twelve true/false questions and Mike knows six for sure. What is the probability that mike will get a perfect score?

Algebra ->  Probability-and-statistics -> SOLUTION: A test has twelve true/false questions and Mike knows six for sure. What is the probability that mike will get a perfect score?       Log On


   

Question 279500: A test has twelve true/false questions and Mike knows six for sure. What is the probability that mike will get a perfect score?
Found 2 solutions by stanbon, Alan3354:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A test has twelve true/false questions and Mike knows six for sure. What is the probability that mike will get a perfect score?
---
Ans: (1/2)^12 = 1/4096
=====================================
Cheers,
Stan H.

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
6 are to be guessed, so it's
(1/2)^6 = 1/64