Quantitative Aptitude :: Number System Problems And Answers

7. What is the least value of x. So that 23x57 is divisible by 3.

A. 2 B. 0
C. 1 D. 3
Answer & Explanation

Answer: Option C

The sum of the digits of the number is divisible by 3, then the number is divisible by3.
2 + 3 + x + 5 + 7 = 17 + x
Least value of x may be 1
Therefore 17 + 1 = 18 is divisible by 3.

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