8 Choose 7
Combination Calculator
What is 8 choose 7?
Answer
8 choose 7 is
8
Order doesn't matter, no repeats: 8 ways to choose 7 of 8 items.
Choosing 7 of 8 is the same as leaving 1 out: C(8, 7) = C(8, 1).
C(8, 7) = 8! / (7! · 1!)
= C(8, 1)
= 8 / 1
= 8
If order matters (permutations): P(8, 7) = 8 × 7 × 6 × … × 2 = 40,320 — each combination in 7! = 5,040 orders.
Row sum: 28 = 256 — all subsets of 8 items.
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See Also
- Random Number Generator - Pick a random whole number between two bounds
- Percent to Probability Converter - Convert Percents to "1 in X" Probability Chance
- Factors of a Number - List all Factors and Factor Pairs of a Number
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