The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is:
123
127
235
305
Explanation:
Required number = H.C.F. of $\left(1657 - 6\right)$ and $\left(2037 - 5\right)$
= H.C.F. of 1651 and 2032 = 127.