Multiple choice

What is the number of selections of at most 3 items from 6 different items?

  1. 20

  2. 22

  3. 41

  4. 42
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Selecting at most 3 items from 6 means choosing 0, 1, 2, or 3 items. This is calculated as 6C0 + 6C1 + 6C2 + 6C3 = 1 + 6 + 15 + 20 = 42.

AI explanation

The number of selections of at most 3 items from 6 different items includes choosing 0, 1, 2, or 3 items. This is calculated as 6C0 plus 6C1 plus 6C2 plus 6C3, which equals 1 plus 6 plus 15 plus 20. Adding these values together gives 42 selections.

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