In N is a positive integer less than 200, and 24N/60 is an integer, then N has how many different positive prime factors? Choose the correct choice from the following answers:  A) 1  B) 3  C) 5  D) 6  E) 8
(A).   24n/60 must be an integer. =&gt; 2n/5 must be an integer. Hence n must be a multiple of 5.   =&gt; n has 1 different prime integers.
<result>A</result>
In N is a positive integer less than 200, and 24N/60 is an integer, then N has how many different positive prime factors?