GATE ECE 2014 Set 1 | GA | Question: 6

Question

Find the odd one from the following group:

$W,E,K,O \qquad   I,Q,W,A  \qquad   F,N,T,X \qquad   N,V,B,D$

• A. $W,E,K,O$
• B. $I,Q,W,A $
• C. $F,N,T,X $
• D. $N,V,B,D$

Answer 1

Ans is (D)

the no of alphabet between B,D in N,V,B,D is 1 while in other 3 sets, it is 4. Alphabet sequence in all the sets are obtained by adding 8,6,4 respectively to the previous one in sequence.

Comments

 alphabet between B, and D is 1 while in the other 3 sets it is 3 (i think correction is required in the above solution)

and how we are getting “Alphabet sequence in all the sets by adding 8,6,4 respectively to the previous one in sequence.” I  don't understand.

@srestha

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@Prateek pallaw understand option A like this,

option A) $W, E, K, O$

$W \xrightarrow{+8} E \xrightarrow{+6} K \xrightarrow{+4} O$

Answer 2

W E K O ->  W E (+6=NEXT Digit) K O

I Q W A -> I Q (+6=NEXT Digit) W A

F N TX -> F N (+6 =NEXT Digit) T X

N V B D -> N V (-20=NEXT Digit) B D

option "D" only odd one 

Comments

W -> E = -18

I -> Q = +8

F -> N = +8

N -> V = +8
answer can be A also ?

Answer 3

The pattern is as follows:

1. $W\xrightarrow{+8}E\xrightarrow{+6}K\xrightarrow{+4}O$
2. $I\xrightarrow{+8}Q\xrightarrow{+6}W\xrightarrow{+4}A$
3. $F\xrightarrow{+8}N\xrightarrow{+6}T\xrightarrow{+4}X$
4. $N\xrightarrow{+8}V\xrightarrow{+6}B\xrightarrow{+2}D$

Clearly, we can see option $(D)$ does not follow the pattern.

Answer 4

Difference of second and third letter.

1. K - E = 11 - 5 = 6

2. W - Q = 23 - 17 = 6

3. T - N = 20 - 14 = 6

4. B - V = 2 - 22 = -20

so option 4 is traitor.