There are 12 students in a social studies class. three students will be selected to present their term projects today. In how many specific ways can three students be selected?

(a) 1320
(b) 220
(c) 504
(d) 36

Question

There are 12 students in a social studies class. three students will be selected to present their term projects today. In how many specific ways can three students be selected?

(a) 1320
(b) 220
(c) 504
(d) 36

dan815 · Answer

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dan815 · Answer

the question says specific ways, so i guess order matters!

campbell_st · Answer

well if there is no order to the selection its 



$$\frac{12 \times 11\times 10}{3 \times 2\times 1}$$

the number of ways of selecting 3 people from 12

divided by the number of ways of arranging the 3 people..

dan815 · Answer

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