Find the number of zeros in 1 × 2 × 3 × 4 × ........ × 15
A8
B6
C3
D4
Answer:
C. 3
Read Explanation:
1 × 2 × 3 × 4 × ........ × 15
When prime factorisation is done zero is obtained when 5 is multiplied by 2
So here we have to only consider powers of 5{since it occcour least}
5 × 10 × 15 = 5 × 5 × 2 × 5 × 3
= 5^3
number of zeros = power of 5 = 3
