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True or false: The product of any r con...

True or false: The product of any `r` consecutive natural numbers is always divisible by `r!`

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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
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  2. Let f(n)=sum(r=0)^nsum(k=r)^n(k r)dot Find the total number of divis...

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  4. Statement 1: Number of zeros at the end of 50! is equal to 12. Stateme...

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  14. If p, q, r are any real numbers, then (A) max (p, q) lt max (p, q, r)...

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  15. Number of ways of selecting three integers from {1,2,3, , n} if their ...

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  16. The number of ways of choosing triplet (x , y ,z) such that zgtmax{x,...

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  17. Find the value of 4C1 - 2C2

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  18. If a seven-digit number made up of all distinct digits 8, 7, 6, 4, ...

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