The greatest number which on dividing 1642 and 1856 leaves remainders 6 and 4 respectively, is:	Answers.
A) 123
B) 127
C) 235
D) 4
E) 505

Rationale: "explanation : required number = h . c . f . of ( 1642 - 6 ) and ( 1856 - 4 ) = h . c . f . of 1636 and 1852 = 4 . answer : d"
Answer: D