Find the number of consecutive zeros at the end of the following numbers.
1^1*2^2*3^3------10^10
a.25 b.15 c.10 d.20
1^1*2^2*3^3------10^10
a.25 b.15 c.10 d.20
Hi sukhman,
This question is similar to another question that you posted earlier that asked for the number of zeroes in a string of "multiplied values"
While this is not a GMAT question, it can be solved in the same way as the other prompt: we need to find all the zeroes in this string.
10^10 has 10 zeroes in it, but these are not the only ones.
5^5 = 5x5x5x5x5. Each of these 5s can be multiplied by an even number, which would create a number that ends in a zero. These 5 numbers would gives us 5 more zeroes.
Total number of zeroes = 10 + 5 = 15
GMAT assassins aren't born, they're made,
Rich
