3 years ago

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

Mathematics

1 answer:

lesya692 [45]3 years ago

8 0

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

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