Question

The number of zeros at the end of the product of all prime numbers between 1 and 1111 is?

Answer 1

prime no.s betn 1 & 1111 are 2,3,5,7,11,...

there is no other prime no. ending with 5 as unit digit, except one '5'

2*5= 10 gives only one zero in the product of all prime no.s 

so,number of zeros at the end of the product = 1

Answer 2

The number of zeros at the end of the product of all prime numbers is 1

Explanation:

There is no other prime no. ending with 5 as unit digit, except one '5'

2*5= 10 gives the one and only zero in the product of all prime nos.

The number of zeros at the end of the product = 1