The greatest number that exactly divided 105, 1001 and 2436 is : Select the correct option
A) 3	B) 7	C) 11	D) 21	E) 24

Rationale: solution h . c . f . of 2436 and 1001 is 7 . also , h . c . f . of 105 and 7 is 7 . ∴ h . c . f . of 105 , 1001 and 2436 is 7 . answer b
Answer: B