Question

Q48. A = {1, 3, 5, 7, 9}

B = {0, 2, 4, 6, 8}

Two numbers are selected one each from the sets A and B. What is the probability that the sum of the numbers is 9?

• A. (a) $\frac{1}{4}$
• B. (b) $\frac{1}{3}$
• C. (c) $\frac{1}{5}$
• D. (d) None of the above

Answer 1

The correct option is C

(c) $\frac{1}{5}$

Total possible pairs = 5 x 5 = 25

Pairs having sum of 9 = (1, 8), (3, 6), (5, 4), (7, 2), (9, 0)

Therefore, probability = $\frac{5}{25}=\frac{1}{5}$