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Colt1911 [192]
3 years ago
9

10. In how many ways can a student select 7 out of 10 questions to work on an exam

Mathematics
2 answers:
matrenka [14]3 years ago
7 0

Answer:

Step-by-step explanation:

dedylja [7]3 years ago
7 0

7C10 = 10!/(7!)(10-7)!

7C10 = 10!/(7!)(3!)

7C10 = (10 x 9 x 8 x 7)/(7 x 6 x 5)(6)

7C10 = (10 x 9 x 8)/6

7C10 = 720/6

7C10 = 120

Answer: 120 ways

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