The greatest number which on dividing 1642 and 1856 leaves remainders 6 and 4 respectively, is: Choose one:
A) 123
B) 127
C) 235
D) 4
E) 505
Explanation:   Required number = H.C.F. of (1642 - 6) and (1856 - 4)   = H.C.F. of 1636 and 1852 = 4. Answer: 4
<result>D</result>
The greatest number which on dividing 1642 and 1856 leaves remainders 6 and 4 respectively, is: