Multiple choice

Which of the following numbers is not divisible by 3?

  1. 215613

  2. 214563

  3. 214511

  4. 214851

  5. None of these
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C Correct answer
Explanation

If the sum of all the digits is divisible by 3, then the number is also divisible by 3. Therefore, sum of digits = 2 + 1 + 4 + 5 + 1 + 1 = 1414 is not divisible by 3. Therefore, 214511 is also not divisible by 3

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