The aggregate number of whole numbers somewhere around100 and 200 which are…

2025

The aggregate number of whole numbers somewhere around100 and 200 which are distinct by both 9 and 6 is:

  1. A.

    5

  2. B.

    6

  3. C.

    7

  4. D.

    8

Attempted by 21 students.

Show answer & explanation

Correct answer: B

Key idea: a number divisible by both 6 and 9 must be divisible by their least common multiple (LCM).

Step 1 — Find the LCM:

  • LCM(6, 9) = 18

Step 2 — Find multiples of 18 between 100 and 200:

  • Smallest multiple greater than 100: ceil(100 / 18) = 6 → 18 × 6 = 108

  • Largest multiple less than 200: floor(200 / 18) = 11 → 18 × 11 = 198

  • All multiples in this range: 108, 126, 144, 162, 180, 198

Step 3 — Count them:

  • Number of multiples = 11 − 6 + 1 = 6

Conclusion: There are 6 whole numbers between 100 and 200 that are divisible by both 6 and 9.

Note: The original solution image concluded 5 incorrectly. This corrected solution shows the full counting method and the correct total of 6.

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