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

User EdwardH
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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

User Hagakurje
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4.5k points
6 votes

Answer:

Explanation:

10. In how many ways can a student select 7 out of 10 questions to work on an exam-example-1
User DivB
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