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191. One term in the number series is wrong. Find out the wrong term.
8, 14, 26, 48, 98, 194, 386

Discuss
Solution:
The correct pattern is x 2 - 2.
So, 48 is wrong and must be replaced by (26 x 2 - 2) i.e. 50.
192. One term in the number series is wrong. Find out the wrong term.
3, 10, 27, 4, 16, 64, 5, 25, 125

Discuss
Solution:
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.
193. One term in the number series is wrong. Find out the wrong term.
1, 5, 9, 15, 25, 37, 49

Discuss
Solution:
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.
194. One term in the number series is wrong. Find out the wrong term.
4, 10, 22, 46, 96, 190, 382

Discuss
Solution:
The correct pattern is + 6, + 12, + 24, + 48, + 96, + 192.
So, 96 is wrong and must be replaced by (46 + 48) i.e. 94.
195.  One term in the number series is wrong. Find out the wrong term.
2, 6, 24, 96, 285, 568, 567

Discuss
Solution:
The correct pattern is x 6 - 6, x 5 - 5, x 4 - 4,.....
So, 24 is wrong and must be replaced by (6 x 5 - 5) i.e. 25.
196. One term in the number series is wrong. Find out the wrong term.
3, 2, 8, 9, 13, 22, 18, 32, 23, 42

Discuss
Solution:
The given sequence is a combination of two series:
I. 3, 8, 13, 18, 23 and II. 2, 9, 22, 32, 42
The pattern in I is + 5, and the pattern in II is + 10. So, in II, 9 is wrong and must be replaced by (2 + 10) i.e. 12.
197. One term in the number series is wrong. Find out the wrong term.
196, 169, 144, 121, 101

Discuss
Solution:
The sequence is (14)2, (13)2, (12)2, (11)2, (10)2.
So, 101 is wrong and must be replaced by (10)2 i.e. 100.
198. One term in the number series is wrong. Find out the wrong term.
56, 58, 62, 70, 84, 118, 182

Discuss
Solution:
The correct pattern is + 2, + 4, + 8, + 16, + 32, + 64 i.e. + 2, + 22, + 23, + 24, + 25, + 26.
So, 84 is wrong and must be replaced by (70 + 16) i.e. 86.
199. One term in the number series is wrong. Find out the wrong term.
1, 5, 5, 9, 7, 11, 11, 15, 12, 17

Discuss
Solution:
The given sequence is a combination of two series:
I. 1, 5, 7, 11, 12 and II. 5, 9, 11, 15, 17
The pattern in both I and II is + 4, + 2, + 4, + 2. So, 12 is wrong and must be replaced by (11 + 2) i.e. 13.
200. One term in the number series is wrong. Find out the wrong term.
25, 36, 49, 81, 121, 169, 225

Discuss
Solution:
The correct sequence is 52, 72, 92, 112, 132, 152. So, 36 is wrong.