If the number x is equal to the product of the n first positive integers (1, 2, 3, ... n), what is the minimum value of n such that the last six digits are equal to 0?
a. 20
b. 25
c. 30
d. 35
e. 40
Can you help me out? Multiplying is too long, isn't there a faster method?[/u]
a. 20
b. 25
c. 30
d. 35
e. 40
Can you help me out? Multiplying is too long, isn't there a faster method?[/u]
