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Choose the correct formula for combination.
A . n!/r!(n-r)!
B. n!/(n-r)!

Sagot :

saifuf12

Answer:

B

Step-by-step explanation:

The number of combinations of n objects taken r at a time is determined by the following formula: C(n,r)=n!/(n−r)!

Answer: The answer is A n!/r!(n-r)!

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