1.

What value should come in place of ? in the given number series ? 15, 51, 162, 498, 1509, ?

Answer»

4545



15, (15 + 2) x 3 = 51,
(51 + 3) x 3 = 162
(162 + 4) x 3 = 498, 
(498 + 5) x 3 = 1509
(1509 + 6) x 3 = 4545



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