If x and y are both odd prime numbers andx < y, then how many different positive integer factors ...
If x and y are both odd prime numbers andx < y, then how many different positive integer factors does2xyhave?
Answer/Solution
8
Steps/Work
x and y are both odd prime numbers- It means either x or y is not 2
and since prime numbers have only two factors - 1 and the number itself
x and y each will have (1+1)= 2 factors
Hence 2xy will have (1+1)(1+1)(1+1)= 8 factors
E is the answer
and since prime numbers have only two factors - 1 and the number itself
x and y each will have (1+1)= 2 factors
Hence 2xy will have (1+1)(1+1)(1+1)= 8 factors
E is the answer