Directions to Solve
In this type of questions, one term in the number series is wrong. Find out the wrong term.
11.
15, 16, 22, 29, 45, 70
A. 16 B. 22
C. 45 D. 70
Answer & Explanation
Answer: Option B
Explanation:
The correct pattern is + 1, + 4, + 9, + 16, + 25 i.e. + 12, + 22, + 32, + 42, + 52.
So, 22 is wrong and must be replaced by (16 + 4) i.e. 20.
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12.
8, 14, 26, 48, 98, 194, 386
A. 14 B. 48
C. 98 D. 194
Answer & Explanation
Answer: Option B
Explanation:
The correct pattern is x 2 – 2.
So, 48 is wrong and must be replaced by (26 x 2 – 2) i.e. 50.
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13.
3, 10, 27, 4, 16, 64, 5, 25, 125
A. 3 B. 4
C. 10 D. 27
Answer & Explanation
Answer: Option C
Explanation:
The correct sequence is 3, 32, 33, 4, 42, 43, 5, 52, 53.
So, 10 is wrong and must be replaced by 32 i.e. 9.
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14.
1, 5, 9, 15, 25, 37, 49
A. 9 B. 15
C. 25 D. 37
Answer & Explanation
Answer: Option B
Explanation:
The terms of the given series are 12, (22 + 1), 32, (42..+ 1), 52, (62 + 1), 72.
So, 15 is wrong and must be replaced by (42 + 1) i.e. 17.
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15.
4, 10, 22, 46, 96, 190, 382
A. 4 B. 10
C. 96 D. 382
Answer & Explanation
Answer: Option C
Explanation:
The correct pattern is + 6, + 12, + 24, + 48, + 96, + 192.
So, 96 is wrong and must be replaced by (46 + 48) i.e. 94.