A box contains 7 yellow, 5 blue, and 4 red balls. Three balls are drawn at random. Find the probability that:

Exactly two balls are yellow

Question

Gunnar Hudson

Mathematics

31 August, 14:49

A box contains 7 yellow, 5 blue, and 4 red balls. Three balls are drawn at random. Find the probability that:

Exactly two balls are yellow

+1

Answers (1)

Know the Answer?

Jaylin Krause · Answer 1

Answer: 27/80

Step-by-step explanation:

Your dealing with probability this time, not multiplying chooses. So it's adding instead of multiplying.

Total balls, 16

All options: 16 choose 3,

Blue

7 choose 2 * 5 choose 1 / 16 choose 3 = option1

Red

7 choose 2 * 5 choose 1 / 16 choose 3 = option2

Add option1 + 2

A box contains 7 yellow, 5 blue, and 4 red balls. Three balls are drawn at random. Find the probability that:Exactly two balls are yellow

A box contains 7 yellow, 5 blue, and 4 red balls. Three balls are drawn at random. Find the probability that:

Exactly two balls are yellow