Finding Probability using tree tables and outcome tables.

A tes has four true/false questions.

A) draw a tree diagram showing all possible true/false combinations for the answers to the test.

1)T =T/F

F =T/F

2)T =T/F

F =T/F

3)T =T/F

F =T/F

4)T =T/F

F = T/F

16 different combos.

b) Determine the probability that student will get four correct

1/2 chance of getting each correct so 1/2 x 1/2 x 1/2 x1/2 (4 questions, 4x)= 1/16

c) Determine the probability that student will get three questions correct by guessing.

This one i kept getting 1/8 i might be solving it the wrong way but I followed the same pattern as part b.