The greatest number that exactly divides 105, 1001 and 2436 is:

The greatest number that exactly divides 105, 1001 and 2436 is:

A 3

B 7

C 11

D 21

Solution

Correct Answer: Option B

105 = 3X 5X 7

1001 = 7*13*11

2436 = 3*4*7*29

HCF = 7