Question

A container has 14 yellow chips, 10 blue chips and 12 red chips in it. One chip is randomly chosen from the container, and then a second chip is randomly chosen after replacing the first chip. What is the probability that both chips are red?

Answer 1

The probability of drawing a red chip on the first draw is  12/36  =  1/3 .

The probability of drawing a red chip on the second draw is  12/36  =  1/3 .

The probability that both events happen is  (1/3 x 1/3) = 1/9  =  11.1%  .