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There are 210 ways to choose 4 persons from a group of 10.
The formula for "10 choose 4" is:
10! / (4! x 6!)
= (10 x 9 x 8 x 7) / (4 x 3 x 2 x 1)
= 5040 / 24
= 210
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∙ 11y ago
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