5. Let r,ne N. Show that the product (n+1)(n+2)...(n+r) of r consecutive positive integers is divisible by r!.

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.1: Ideals And Quotient Rings
Problem 19E: 19. Let and be nonzero integers. Prove that if and only if divides .
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5. Let r,neN. Show that the product (n+1)(n+2)...(n+r) of r consecutive
positive integers is divisible by r!.
Transcribed Image Text:5. Let r,neN. Show that the product (n+1)(n+2)...(n+r) of r consecutive positive integers is divisible by r!.
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