In N is a positive integer less than 200, and 10N/60 is an integer, then N has how many different positive prime factors?  Choose the correct option:
A) 2	B) 3	C) 5	D) 6	E) 8
(A).   10n/60 must be an integer. =&gt; 1n/6 must be an integer. Hence n must be a multiple of 2*3.   =&gt; n has 2 different prime integers.
<result>A</result>
In N is a positive integer less than 200, and 10N/60 is an integer, then N has how many different positive prime factors?