Discussion of Question with ID = 021 under Missing-Numbers

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Question

What is missing?

A

180.

B

182.

C

179.

D

185.

Soln.
Ans: d

Double each figure and add 1, 2, 3, 4 and so on, 4 doubled = 8 + 1 = 9, then 9 doubled = 18 + 2 = 20 and so on. So in the end we will have 90 X 2 + 5 = 185.


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