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3 March, 23:00

Which one of these numbers is not like the others?

21,15,6,16,27

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Answers (1)
  1. 4 March, 00:06
    0
    16

    Step-by-step explanation:

    It's hard to tell what the what the problem means by "not like the others", but here's a guess.

    16 is a perfect square. 16 = 4^2

    None of the other numbers are perfect squares.

    Also, 16 is not divisible by 3. All other numbers are divisible by 3.
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