The document Logical Sequence - Introduction and Examples (with Solutions), Logical Reasoning LR Notes | EduRev is a part of the Quant Course UPSC Prelims Paper 2 CSAT - Quant, Verbal & Decision Making.

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**Q.1. E_G_EFF_E_FG_FG_EF**

(a) GFGEEE

(b) FGGGEF

(c) FGGEEG

(d) EGFEFG**Ans: **c**Solution:**

The series follows, +1,+1,+0 addition pattern.

So going by options, we get Option C to be correct.

Question 1:**QQQ_TT__Q_T_Q_Q**

(a) CMAMC

(b) MACAM

(c) MCAMC

(d) MCACM

This is a Series with MCA blocks repreated.

So, Our series must be

MCA MCA MCA MCA MCA M

Going by Options, We see Option D is correct

(a) 151

(b) 75

(c) 375

(d) 750

This series follows the rule of *2 and *2+ last term.

15*2 =30

30*2 +15= 75

75*2 = 150.

Thus, 150 is the wrong term.

(a) XCK

(b) UFH

(c) ZAC

(b) PFD

Look at the middle term.

We see the following Series.

A B C D E

Thus C is missing.

Going by options, We get A to be correct.

(a) M,N

(b) O,P

(c) Q,R

(d) S,T

In the number System of the digits, we see the series relates to an alternating +2,-2 series.

Number the letters, we get the following : 7,20,9,18,11,16. So the next two terms will be 13th and 14th term. Which are : M and N

Thus, Option A.

Question 2:**What will be the next term in?**

**GHB, KLF, ___, ___, WXN**

(a) 18

(b) 29

(c) 38

(d) 51

The next term of the series is denoted by adding consecutive odd terms starting from 3

3+3=6

6+5 =11

11+7=18

18+9=27

27+11 =38

Since we have 29 in place of 27. It is the wrong term

(a) 65

(b) 126

(c) 217

(d) 213

The series is an increasing series.

213 the last term is a smaller term that the previous one.

Thus it is Wrong.

Question 3:**Find the wrong number in the given series?**

4 10 18 29 40 54 70

4 10 18 29 40 54 70

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