Question

6. A ball is selected at random from a bag containing

3 red balls, 4 black balls and 5 green balls. The
first ball is replaced and a second is selected. Find
the probability of obtaining:
(a) two red balls,
(b) two green balls.

Answer 1

two green balls

Explanation:

because of many reasons boy

Answer 2

a. 1/16 b. 25/144

Explanation:

Since the bag does not change each time, the probability stays the same. To get the desired outcome both times, we must square the probability.