12, 21, 39, 75, 147, __ Options: A . &nbsp273 B . &nbsp291 C . &nbsp283 D . &nbsp263 E . &nbsp306

12, 21, 39, 75, 147, _

Question

What number should come next?

12, 21, 39, 75, 147, __

Answer: Option B

12^*2-3,
21^*2-3,
39^*2-3,
75^*2-3, 147, __The next number in the series is 147^*2-3 = 291.

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