Mark the correct alternative in the following: The product of r consecutive positive integers is divisible by

Question

Philoid · Accepted Answer

The product of r consecutive positive integers is

=1∙2∙3∙4∙…∙(r-4)∙(r-3)∙(r-2)∙(r-1)∙r

= r!

So, the product of r consecutive positive integers is divisible by r!.