Elective Mathematics

Question 1

1A fair die is thrown. P(a number greater than 3) = ___ (as a fraction in lowest terms)

Easy

Your answer (fill in the blank)

Question 2

2A and B are independent with P(A) = 0.6 and P(B) = 0.2. Find P(A ∪ B).

Medium

A. 0.88 B. 0.68 C. 0.12 D. 0.8

Question 3

3Mutually exclusive events are always independent.

Hard

A. True B. False

Question 4

4P(A) = 0.4, P(B) = 0.1 and P(A ∩ B) = 0.04. Find P(A | B).

Medium

A. 0.04 B. 0.5 C. 0.1 D. 0.4

Question 5

5For independent events P(A ∩ B) =

Easy

A. 0 B. P(A) + P(B) C. P(A) × P(B) D. P(A) ÷ P(B)

Question 6

6A and B are independent with P(A) = 0.5 and P(B) = 0.5. Find P(A ∪ B).

Medium

A. 0.75 B. 1.75 C. 1 D. 0.25

Question 7

7A fair die is thrown. P(a number greater than 6) = ___ (as a fraction in lowest terms)

Easy

Your answer (fill in the blank)

Question 8

8For mutually exclusive events P(A ∪ B) =

Easy

A. P(A) − P(B) B. P(A)P(B) C. 1 D. P(A) + P(B)

Question 9

9If A and B are independent, then P(A | B) = P(A).

Medium

A. True B. False

Question 10

10P(A ∪ B) can be greater than 1.

Easy

A. True B. False