Multiple choice

Which of the following alternatives will continue the same pattern and replace the question mark in the given series? 7, 14, 42, 84, 252, ?

  1. 756

  2. 618

  3. 504

  4. 420

  5. 336

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C Correct answer
Explanation

The pattern is: 7 * 2 = 14, 14 * 3 = 42, 42 * 2 = 84, 84 * 3 = 252, 252 * 2 = 504.

AI explanation

This series follows an alternating multiplication pattern using the multipliers 2 and 3. Applying this to the given numbers yields 7 x 2 = 14, 14 x 3 = 42, 42 x 2 = 84, and 84 x 3 = 252. To find the next term, multiply 252 by the next multiplier in the repeating sequence, which is 2: 252 x 2 = 504.