Question

PLEASE HELP ASAP!!! FOR A TEST

A set of nine cards has a different number, 1 through 9, printed on each card. Sarah picks one card from the set, replaces it, and then draws a second card. What is the probability that Sarah draws a 3 and then draws a multiple of 2?

Answer 1

4/81

Explanation:

So first, the probability that she gets a 3 first is 1/9, because there is only 1 card out of 9 total cards.

Next, the probability that she gets a multiple of 2 is 4/9, because there are 4 different things she can pick (2, 4, 6, 8) out of the total 9 cards.

The last step is to multiply the two, so 1/9 * 4/9 = 4/81.