Multiple choice

Find the missing term in the following number series. 2, 6, 21, ?, 445, 2676

  1. 98

  2. 86

  3. 88

  4. 68

  5. 85
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C Correct answer
Explanation

The pattern is: 2*2 + 2 = 6; 6*3 + 3 = 21; 21*4 + 4 = 88; 88*5 + 5 = 445; 445*6 + 6 = 2676.

AI explanation

The series follows a pattern of multiplying by an increasing integer and then adding an increasing integer: (2 x 2) + 2 = 6, then (6 x 3) + 3 = 21. To find the missing term, apply the next step: (21 x 4) + 4 = 88. This is verified by the next term, since (88 x 5) + 5 = 445, making 88 the missing term.

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