Question

how many zeros in the product of first 25 natural numbers

Answer 1

I WILL HELP YOU OUT--
QUESTION- Find the number of zeros at the end of the product 
a. Of first 100 multiples of 10
b. 5X10X15X20X25X30X35X40X40X45
C. 100!

I would also like to know whether this kind of question is possible in GMAT and what would be the complexity level.

OA-
1. 124
2. 10
3. 24
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