Which is the largest number that divides 17, 23, 35, 59 to leave the same remainder in each case ?
(A) 2
(B) 3
(C) 6
(D) 12
Answer: (C)
Explanation: Required Number = HCF (23-17, 35-23, 59-35, 59-17)
Required Number = HCF (6, 12, 24, 42) = 6
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