What is greatest positive integer n such that 2^n is a factor of 12^12?  Choose one:
A) a)10
B) b)12
C) c)16
D) d)24
E) e)60
The given number is 12^12   =(2*2*3)^12   =(2^24)*(3^12)   So the greatest possible value for n such that 2^n can be factor of given number is 24.   Answer d)24
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What is greatest positive integer n such that 2^n is a factor of 12^12?