Divisibility of Sum of Consecutive Odd Numbers

CMAT 2026 · Quantitative Techniques & Data Interpretation · Easy · Number System

The sum of three consecutive odd numbers is always divisible by: A. 2 B. 3 C. 5 D. 6

Choose the correct answer from the options given below:

  1. A.

    A and B only

  2. B.

    B and D only

  3. C.

    A and C only

  4. D.

    B only

Answer

D

Explanation

Let the numbers be 2n+1,2n+3,2n+52n+1, 2n+3, 2n+5. Sum = 6n+9=3(2n+3)6n + 9 = 3(2n + 3), which is always a multiple of 3. Since 2n+32n+3 is odd, the sum is always odd, so it is not divisible by 2 or 6.

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