Hello there.
<span>Is the number 15 prime or composite?
Answer: C</span>omposite
Answer:
275 .do 25×11=275 because its 11 tv and $25 for a extended warranty
<span>It's 1/r!
nCr = n! / r!(n-r)!
nPr = n! / (n-r)!
If you divide the two you'd have:
n! / r! (n-r)! * (n-r)! / n! = 1/r!
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