What is the greatest value of positive integer x such that 2^x is a factor of 100^50?	Pick one: A) 70 B) 80 C) 90 D) 100 E) 120
Put in simple words, we need to find the highest power of 2 in 100^50   100 = 2^2*5^2   Therefore 100^50 = (2^2*5^2)^50 = 2^100*5^100   Answer : 100
<result>D</result>
What is the greatest value of positive integer x such that 2^x is a factor of 100^50?