Multiple choice

Find the wrong term in the following number series: 8, 11, 17, 47, 128, 371, 1100

  1. 11

  2. 47

  3. 17

  4. 371

  5. 128
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C Correct answer
AI explanation

Multiply each number by 3 and subtract 1 to get the next number. Using this rule, (8 x 3) - 1 = 23, (23 x 3) - 1 = 68, (68 x 3) - 1 = 203, and (203 x 3) - 1 = 608. Comparing this progression to the given sequence, 17 is the first incorrect term and should be 23.

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