Find the greatest number which is such that when794, 858 and 1351 are divided by it, the remainders are all same.	Pick.
A) 1
B) 5
C) 6
D) 7
E) 8

Rationale: given , the remainders are same i . e . differences of that numbers are exactly divisible . hence , you have to find hcf ( x – y , y – z , z – x ) . 858 – 794 = 64 ; 1351 – 794 = 557 ; 1351 – 858 = 493 . hcf of ( 64 , 557 , 493 ) = 1 . answer : a
Answer: A