Instructions

What should come in place of question mark (?) in the following number series ?

Question 172

668, 656, 632, 584, ?, 296

Solution

The pattern here followed is :

668 - 1 * 12 = 656

656 - 2 * 12 = 632

632 - 4 * 12 = 584

584 - 8 * 12 = 488

488 - 16 * 12 = 296

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