If n is a positive integer less than 200 and 14n⁄60 is also an integer, then n has how many different positive prime factors?
a. 2
b. 3
c. 5
d. 6
e. 8
a. 2
b. 3
c. 5
d. 6
e. 8
14n/60 is equal to (2*7*n)/(2*2*3*5) therefore, to 14n/60 to be an integer, n has to have 2 3 and 5. so answer is 3.
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