Question

Among a set of 5 black balls and 4 red balls, how many selections of 5 balls can be made such that at least 3 of them are black balls?​

Answer 1

Answer:

3 sets is answer

Step-by-step explanation:

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Answer 2

Answer:

We have 5 black and 3 red.

In order to maintain the condition of at least 3 black balls in a selection of 5 balls, there are three possible options:

3 black + 2 red

4 black + 1 red

5 black + 0 red

Applying combination on all three options and adding them we get the answer 46.

Hence there can be 46 selections