Instructions

What will come in place of the question mark (?) in each of the following number series.

Question 124

402, 400, 388, 358, 302, ?

Solution

The pattern followed is :

402 $$- (1 \times 2)$$ = 400

400 $$- (3 \times 4)$$ = 388

388 $$- (5 \times 6)$$ = 358

358 $$- (7 \times 8)$$ = 302

302 $$- (9 \times 10)$$ = 212

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