வெல்லுங்கள் CSAT 2025 - 24: Letter Series

Questions & Answers- (Multiple Choice) - Letter Series
கொள்குறி வினா- விடைகள்- எழுத்து தொடர்கள்

1 - 9 : Choose next letter/letters

1. Q, L, H, E, C, ___
a. B b. A
c. Z d. Y

2. H I K J L M O N P Q S R T U __ __
a. V W b. W V
c. V X d. W X

3. A Z , B Y , C X , D W, __ __
a. V F b. F V
c. E V d. V E

4. C F L, E I K, G L J, I O I, __ __ __
a. J R H b. J P J
c. K Q H d. K R H

5. J P R, H R O, F T L, D V I , __ __ __
a. C W H b. B W H
c. B X F d. C X E

6. X Y Z C B A U V W F E D __ __ __
a. Q R S b. R S T
c. P Q R d. T S R

7. ELFA, GLHA, ILJA, ___ , MLNA
a. K L L A b. K M L A
c. K L M A d. L L A M

8. JAK, KBL, LCM, MDN, _____
a. O E N b. O E O
c. M E O d. N E O

9. BDFH, EGIK, HJLN, ________
a. JLNP b. KNOP
c. KMOQ d. KMPR

10 - 12 In the following questions, which group of letters will come in the place of '?' ?

10. PSVYB : JHEBY : : BEHKN : ?
a. XUROM b. YVSPM
c. YVTOM d. XUSPN

11. EJOTY : JTEOY : : JOTEY : ?
a. EJOTY b.JTEOY
c. OJETY d. OEJTY

12. HUDCO : UHDOC : TAMIL : ?
a. ATLIM b. ATIML
c. ATMLI d. ATLMI

13 - 20 : In each of the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it . Choose the correct alternative.

13. a _ c _ b c a _ _ a _ c a b c
a. b a b c b b. b c b c b
c. b a b a b d. b a a c b

14. p _ r s q r _ p r _ p q _ p _ r
a. q p s p q b. q s s s q
c. q r r s q d. q r s s q

15. a _ c b a _ b c b a a b c _ a
a b c _ a
a. b a b a b. a a b b
c. b a a b d. b a b b

16. abc_ bca_cabbab_cb_a_
a. a a c c a b. c a c a a
c. c a c c a d. c a a c a

17. a _ a c a b a _ a _ a c a b a _
a. b c b c b. c c b c
c. b b c c d. b c c b

18. a b c _ b c d a c d a _ _ a b _
a. d b c d b. d b d c
c. d c d b d. c b d c

19. c _ b b a _ c a b _ a c _ a b _ a c
a. b c b c b b. a c a c b
c. a c b a b d. a c b c b

20. x y _ x x _ y _ x _ y x _
a. y y x y x b. y x x y x
c. y y x x x d. y y x y y

Answers
1. a 2. b 3. c 4. d 5. c

6. b 7. a 8. d 9. c 10. b

11. d 12. c 13. a 14. b 15. d

16. c 17. a 18. b 19. d 20. a

Explanation to Answers

1. Using E J O T Y rule, putting numbers to Q, L, H, E, C, ___
17 12 8 5 3 2
Diff -5 -4 -3 -2 -1
Corresponding letter to 2 is B

2. H I , K J ; L M, O N ; P Q, S R ;
So next T U, W V
Hence correct choice is W V

3. Spilt into two series,
A , B , C , D , __ and Z , Y , X , W , __
Itis clear that next two letters are
E and V.

4. Spilting into three series and putting numbers to letters
C , E , G , I , __ 3, 5, 7, 9, - 11
F , I , L , O , __ 6, 9, 12, 15 - 18
L , K , J , I , __ 12, 11, 10, 9 - 8
So next group of letters are corresponding to 11, 18 and 8
Hence K R H is the answer.

5. Spilting into three series and putting numbers to letters
J , H , F , D , __ 10, 8, 6, 4, - 2
P , R , T , V , __ 16, 18, 20, 22 - 24
R , O , L , I , __ 18, 15, 12, 9 - 6
So next group of letters are corresponding to 2, 24 and 6
Hence B X F is the answer.

6. Grouping the series
X Y Z | C B A | U V W | F E D |
24 25 26 3 2 1 21 22 23 6 5 4
It is clear that next 3 letters must be
18 19 20 -> R S T

7. Second letter L and fourth letter A are common to all groups.
Eliminating L and A, the series becomes
E F G H I J __ __ M N
It is easy to note that the blanks can be filled by two consecutive letters K and L.
Hence the answer choice is K L L A

8. Breaking into three series,
J K L M __ ; A B C D __ ; K L M N __ ;
It is easy note that corresponding blanks can be filled by the letters
N E O which is the required group of letters.

9. Putting numbers using EJOTY rule,
BDFH 2 4 6 8
EGIK 5 7 9 11
HJLN 8 10 12 14
Next number series must be
11 13 15 17. Corresponding letters
K M O Q

10. Putting numbers using EJOTY rule,
P S V Y B : J H E B Y =>
16 19 22 25 2 : 11 8 5 2 25. Here 16+11=19+8=22+5=25+2=2+25=27.
Similarly
B E H K N
2 5 8 11 14. Correspondingly
25 22 19 16 13 numbers
Y V S P M letters

11. Putting serial numbers to letters,
EJOTY => 1 2 3 4 5 becomes
JTEOY => 2 4 1 3 5. Therefore
JOTEY => 1 2 3 4 5 becomes
2 4 1 3 5 => O E J T Y is the correct choice.

12. In this HUDCO : UHDOC,
Middle letter is fixed whereas first two letters interchanged and likewise last two letters. So TAMIL becomes
ATMLI.

13. Grouping the letters in the series,
|a _ c| _ b c| a _ _| a _ c |a b c|
It is clear that a b c is repeated.
Hence the blanks can be filled by
b a b c b

15. There are 16 letters. Make them into four groups each containing four letters.
a _ c b a| _ b c b a| a b c _ a| a b c _ a
From first two groups, it is evident that each group contains a b c b a.
So correct choice is b a b b

17. There are 16 letters. Make them into four groups each containing four letters
a _ a c | a b a _ | a _ a c | a b a _
In each group first letter is a
And second letter is b
Third letter is a
And fourth letter is c
So the complete series is
a b a c | a b a c | a b a c | a b a c
Hence the correct choice is b c b c

18. There are 16 letters. Make them into four groups each containing four letters
a b c _ | b c d a | c d a _ | _ a b _
a b c , b c d and c d a implies that next will be d a b.
b c d a => each group of letters must contain all the four letters a, b, c and d.
Hence the series must be
a b c d | b c d a | c d a b | d a b c
The correct choice is d b d c

19. There are 18 letters. Make them into six groups each containing three letters.
c _ b |b a _| c a b| _ a c |_ a b |_ a c
It is clear that alternatively c a b and
b a c repeated three times in the series.
So the series is
c a b| b a c| c a b| b a c| ca b| b a c
Hence the correct choice is a c b c b.

20. Only two letters are used in the series.
It is clear that xy and yx are repeated adjancently.
xy| yx |xy| yx |xy| yx |x
Correct choice is y y x y x

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