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What is the number of combinations of 7 things taken 3 at a time? A. 21 B. 35 C. 210 D. 343
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What is the number of combinations of 7 things taken 3 at a time?

A. 21
B. 35
C. 210
D. 343

User Mickkk
by
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2 Answers

5 votes

answer: b. 35 (plato/edmentum)

What is the number of combinations of 7 things taken 3 at a time? A. 21 B. 35 C. 210 D-example-1
User Digisec
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5 votes

C_7^3=(7!)/(3!4!)=(5\cdot6\cdot7)/(2\cdot3)=35
User Navneet Garg
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