Ms. Lunette has 18 students in her class. She wants to send 3 of these students to pick up books for the class. How many combinations of 3 students can she choose? A. 6 B. 54 C. 816 D. 4896

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Ms. Lunette has 18 students in her class. She wants to send 3 of these students to pick up books for the class. How many combinations of 3 students can she choose? A. 6 B. 54 C. 816 D. 4896

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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I know for sure that the answer is not either A or D
I think most likely C
tbh I'm not sure

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The number of ways of selecting 'r' number of different things from 'n' number of different things is nCr. So, here, Ms. Lunette has to select 3 different students from 18 different students. The Number of ways of doing so is 18C3 = 18!/3!(18-3)! = 18!/3!15! = (16 * 17 * 18) / (1 * 2 * 3) = 816. The answer is c.
can she repeat people?
18C3 = 816
Yes She can
then follow qwerty's concept
ok Thx 2 all who came to help thou
;)

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