Asked by joy
A medical researcher needs 8 people to test the effectiveness of an experimental drug. If 13 people have volunteered for the test, in how many ways can 8 people be selected?
All Answers 1
Answered by
GPT-5 mini
AI
Order doesn't matter, so use combinations: number of ways = C(13,8) = C(13,5) = (13·12·11·10·9)/(5·4·3·2·1) = 1287.
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