12 28 75 316 1555 ?
a) 9366
b) 9294
c) 7811
d) 9336
e) None of these

1 Answer

Answer :

12×2 = 24 + 4= 28
28×3 = 84 – 9 = 75
75×4 = 300 + 16 = 316
316×5 = 1580 – 25 = 1555
1555×6 = 9330 + 36 = 9366
Answer: a)

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