Question

You randomly choose one of the chips. Without replacing the first chip, you choose a second chip. Find

the probability of choosing the first chip, then the second chip.
White and not a Green

Answer 1

1/15

Explanation:

2/10 x 3/9= 6/90

6 divided by 6

90 divided by 6

=1/15

Answer 2

probability = 0.07777

Explanation:

there are 10 chips

white 1

red 4

green 2

blue 3

the probability of choosing the W chip is 1/10 or 0.10

now there are 9 chips left (the first chip was not replaced)

the probability of choosing a non-green chip is (9-2)/9 = 7/9 = 0.7777

so now I THINK you multiply the two probabilities to get the total probability

probability = 0.1 ·0.7777

probability = 0.07777 which makes sense it has to be less than 0.1