Question

Jenna has a bag that contains 7 red marbles and 25 blue marbles. She selects a marble at random, and then, without replacing the first one, selects another marble at random.

What is the probability that Jenna selects a blue marble and then a red marble? Round your answer to the nearest percent.

Answer 1

P(blue and red) ≈ ? %

Answer 2

How many marbles are there in total?

Answer 3

32

Answer 4

how many blue?

Answer 5

25 blue.

Answer 6

Hence, the probability to pick a blue is 25/32, got it?

Answer 7

Okay.

Answer 8

Now, without put that blue back, how many in total now?

Answer 9

7?