Find number of zeroes at the end of product

Rule:

Convert the number in the form of 2^m × 5ⁿ

1. Number of zeroes = m, if m < n
2. Number of zeroes = n, if n < m

Problems:

1. Find the number of zeroes at the end of 24 × 32 × 17 × 13
   Solution: 24 × 32 × 17 × 13
   = 2³ × 3 × 2⁵ × 17 × 13
   As there is no 5 in it, so there will be no 0 in this product.
2. Find the number of zeroes at the end of 8 × 15 × 25 × 22 × 13 × 19
   Solution: 8 × 15 × 25 × 22 × 13 × 19
   = 2³ × 3 × 5 × 5² × 2 × 11 × 13 × 19
   = 2⁴ × 5³ × 3  × 11 × 13 × 19
   as there are power of 5 is lesser i.e. 3 so no of zeroes will be 3.