Question

Complete the series and explain it properly.

Answer 1

Question: ZYYAR, ABVUM, _______ BCUTL,  XWABT, CDTSK

Lets start off by regrouping them in even and odd orders to see the pattern:

Group 1 : ZYYZR, _______, XWABT

Group 2: ABVUM,  BCUTL,  CDTSK

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Now lets look at the first two letters in each group:

Group 1 : ZYYZR, _______, XWABT

Group 2: ABVUM,  BCUTL,  CDTSK

We can see the pattern in group 2 : AB, BC, CD

(The alphabet order forward being ABCD)

So we imitate the same pattern to group 1:

That will be ZY , YX,  XW

(The alphabet order backward being ZYXW)

⇒ The first two letters of the blank is YX

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Now lets look at the next two letters in each group:

Group 1 : ZYYZR, _______, XWABT

Group 2: ABVUM,  BCUTL,  CDTSK

We can see the pattern in group 2 : VU UT TS

(The alphabet order backward being VUTS)

So we imitate the same pattern to group 1:

That will be YZ, ZA, AB

(The alphabet order forward being YZAB)

⇒ The next two letters of the blank is ZA

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Now lets look at the last letter in each group:

Group 1 : ZYYZR, _______, XWABT

Group 2: ABVUM,  BCUTL,  CDTSK

We can see the pattern in group 2 : M,L,K

(The alphabet order backward being N,M,L,K,J,I )

So we imitate the same pattern to group 1:

That will be R, S,T

(The alphabet order forward being PQRSTUV)

⇒ The last letter of the blank is S

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Putting all the letters together:

The letter we are looking for is YXZAS

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Answer: (1) YXZAS

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Answer 2

A careful look will show that there are two series of group of letter namely:-

1) ZYYZR,(?),XWABT
2) ABVUM,BCUTL,CDTSK

In the first series, let us see the relations of letters in different positions:-

Position Rule (?)

Z ? X. 1 letter backward. Y

Y ? W. 1 letter backward. X

Y ? A. 1 letter forward. Z

Z ? B. -do- A

R ? T. -do- S

Hence the missing letter group is YXZAS (option 1).