The greatest number that exactly divided 105, 1001 and 2436 is :	Choose the correct answer
A) 3
B) 7
C) 11
D) 21
E) 24
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 7
<result>B</result>
The greatest number that exactly divided 105, 1001 and 2436 is :