What is the prime factors’ number of 18?
Select the correct option
A) 2
B) 3
C) 4
D) 5
E) 6
prime factors’ number, as I assume, for a number X=a^n*b^m*c^o*d^p... is = n+m+o+p...   So, 24 = 2^1*3^2   prime factors’ number will be 1+2= 
<gadget id="calculator">1+2</gadget>
<output>3</output>
3.   Hence, answer is 3.
<result>B</result>
What is the prime factors’ number of 18?