Question

If k is a positive integer, then 20k is divisible by how many different positive integers? (1) k is prime. (2) k = 7

Answer 1

Answer:

Most Helpful Expert Reply spjmanoli wrote: If k is a positive integer, then 20k is divisible by how many different positive integers? Stmt 1 says k is prime. so 20k = (2^2)(5^1)(k^1). Total # of factors is (2+1)(1+1)(1+1).