Question

How many zero's are there at the end of 100!

Answer 1

Answer:

A zero can be formed by the multiplication of 5 and 2. Since 100! contains more 2's than 5's, we can find the maximum power of 5 contained in 100!

For your understanding:

$\implies 100!=2^{97}\times5^{24}\times...$

As there are only 24 fives are available, there are 24 zero's at the end of 100!