Pick 8 from 10:

_{10}C_{8}= 45Pick 4 from 10:

_{10}C_{4}= 210Make both picks = 210 * 45 = 9450

AnnA G.

asked • 07/31/18A test has two parts, A and B, each containing 10 questions. A student needs to choose 8 questions from part A and 4 questions from part B. In how many ways can he do that?

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Pick 8 from 10: _{10}C_{8} = 45

Pick 4 from 10: _{10}C_{4} = 210

Make both picks = 210 * 45 = 9450

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