Correct Answer - Option 3 : 249
Given:
1002 × 1001 × 1000 × ........3 × 2 × 1
Concept Used:
No. of zeroes = Sum of all quotient
Calculation:
1002 × 1001 × 1000 × ........3 × 2 × 1
⇒ 1002!
Divide divisor by 5 and add the respective quotient
1002 ÷ 5 = 200
200 ÷ 5 = 40
40 ÷ 5 = 8
8 ÷ 5 = 1
Adding the respective quotients
200 + 40 + 8 + 1 = 249
∴ No. of zeroes in the end is 249.