1. Consider a sample space with 7 elements. Let A be an event with 5 elements and B an event with 4 elements. Let's assume that there are 2 repeated elements between both events.

P(A)=

A. 4/7

B. 2/7

C. 5/7

D. 5

2. If A and B are events, P(A or B) = 0.75, P(A) = 0.67, and P(IA and B) = 0.25. Answer the questions below:

P(B)=

A) 0.33

B.0.67

C) 0.42

D) 0.08

2b. A student randomly answers two true or false questions. The sample space for this random experiment is:

A. {true, false)

B. ((true, true), (true, false), (false, true), (false, false))

C. (false, true)

D. (0 true, 1 true, 2 true}