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Multiple choice

Which number is wrong in the given series? 4, 16, 40, 64, 100

  1. 4

  2. 16

  3. 40

  4. 100
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

40 is the wrong number. The series follows the pattern of even squares: 2²=4, 4²=16, 6²=36, 8²=64, 10²=100. The number 40 breaks this pattern - it should be 36. All other numbers fit the square of consecutive even numbers.

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