3 years ago

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

Mathematics

1 answer:

OleMash [197]3 years ago

4 0

Answer:

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)!

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2 years ago

A recursive rule for an arithmetic sequence is a₁=4;a_n=a_(n−1)−3 .

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The explicit formula of the arithmetic sequence:

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d - common difference

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