What is the least number should be added to 1100, so the sum of the number is completely divisible by 23? Options
A) 1  B) 2  C) 5  D) 4  E) 8

Rationale: "( 1100 / 23 ) gives remainder 19 19 + 4 = 23 , so we need to add 4 answer : d"
Answer: D