What least number must be added to 1056, so that the sum is completely divisible by 23 ?

A. 2

B. 3

C. 18

D. 21

E. None of these

Answer: Option A

Solution(By Examveda Team)

$$\eqalign{ & 23)\,\,\,1056\,\,\,\,(45 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,92 \cr & \,\,\,\,\,\,\,\,\,\,\, - - - \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,136 \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,115 \cr & \,\,\,\,\,\,\,\,\,\,\, - - - \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,21 \cr & \,\,\,\,\,\,\,\,\,\,\, - - - \cr & {\text{Required}}\,{\text{number}} \cr & = \left( {23 - 21} \right) \cr & = 2 \cr} $$