Verbal Reasoning - Series Completion - Discussion

Discussion Forum : Series Completion - Section 1 (Q.No. 8)
Directions to Solve

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.


8.
6, 13, 25, 51, 101, ?
201
202
203
205
Answer: Option
Explanation:

The pattern is x 2 + 1, x 2 - 1, x 2 + 1, x 2 - 1,.....

So, missing term = 101 x 2 + 1 = 203.

Discussion:
12 comments Page 2 of 2.

Rajesh said:   1 decade ago
6, 13, 25, 51, 101..

6,13.
13+(6+6).
25+(13+13).
51+(25+25).
101+(51+51).
= 203.

Hitesh said:   7 years ago
13-6 = 7,
25-13 = 12(7*2=14)-2 = 12,
51-25 = 26 (12*2) + 2 = 26,
101-51 = 50(26*2 = 52)-2 = 50,
x-101 = 102(50*2 = 100) + 2,
x = 203.


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