Odd One Out (SSC CHSL 2023 Tier – 1) (Part

Total Questions: 30

21. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [S.S.C CHSL 14/08/2023 (4th Shift)]

(1) 7 - 19
(2) 11 - 30
(3) 14 - 39
(4) 17 - 48

(a) 3
(b) 2
(c) 1
(d) 4

Correct Answer: (c) 1

Solution:The pattern followed here is :

(1^st number × 3) - 3 = 2^nd number
(11 - 30) → {(11 × 3) - 3} = 30
(14 - 39) → {(14 × 3) - 3} = 39
(17 - 48) → {(17 × 3) - 3} = 48
But,

(7 - 19) → {(7 × 3) - 3} = 18 ≠ 19

Hence, (7 - 19) is the correct answer.

22. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (1st Shift)]

(NOTE: Operations should be performed on whole numbers, without breaking down the numbers into their constituent digits.)

(a) 32 : 99
(b) 42 : 123
(c) 24 : 75
(d) 64 : 195

Correct Answer: (b) 42 : 123

Solution:The pattern followed here is :

(1^st number × 3) + 3 = 2^nd number
(32 : 99) → {(32 × 3) + 3} ⇒ (96 + 3) = 99

(24 : 75) → {(24 × 3) + 3} ⇒ (72 + 3) = 75
(64 : 195) → {(64 × 3) + 3} ⇒ (192 + 3) = 195
But,

(42 : 123) → {(42 × 3) + 3} ⇒ (126 + 3) = 129 (Not 123)

Hence, (42 : 123) is the correct answer.

23. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (1st Shift)]

(a) 9 : 26
(b) 5 : 17
(c) 6 : 19
(d) 8 : 23

Correct Answer: (a) 9 : 26

Solution:The pattern followed here is :

(1^st number × 2) + 7 = 2^nd number
(5 : 17) → {(5 × 2) + 7} ⇒ (10 + 7) = 17
(6 : 19) → {(6 × 2) + 7} ⇒ (12 + 7) = 19
(8 : 23) → {(8 × 2) + 7} ⇒ (16 + 7) = 23
But,

(9 : 26) → {(9 × 2) + 7} ⇒ (18 + 7) = 25 (Not 26)

Hence, (9 : 26) is the correct answer.

24. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [S.S.C CHSL 17/08/2023 (1st Shift)]

(a) SRP
(b) JIG
(c) HGE
(d) FCB

Correct Answer: (d) FCB

Solution:The pattern followed here is :

Hence, FCB is the correct answer.

25. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (2nd Shift)]

(a) 4 : 36
(b) 2 : 10
(c) 5 : 55
(d) 3 : 23

Correct Answer: (d) 3 : 23

Solution:The pattern followed here is :

2^nd number is the multiple of 1^st number
(4 : 36) → 36 is the multiple of 4.
(2 : 10) → 10 is the multiple of 2.
(5 : 55) → 55 is the multiple of 5.
But,

(3 : 23) → 23 is not the multiple of 3

Hence, (3 : 23) is the correct answer.

26. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (2nd Shift)]

(NOTE: Operations should be performed on whole numbers, without breaking down the numbers into their constituent digits.)

(a) 21 : 100
(b) 19 : 88
(c) 13 : 64
(d) 17 : 80

Correct Answer: (a) 21 : 100

Solution:The pattern followed here is :

(1^st number × 4) + 12 = 2^nd number
(19 : 88) → {(19 × 4) + 12} ⇒ (76 + 12) = 88
(13 : 64) → {(13 × 4) + 12} ⇒ (52 + 12) = 64
(17 : 80) → {(17 × 4) + 12} ⇒ (68 + 12) = 80
But,

(21 : 100) → {(21 × 4) + 12} ⇒ (84 + 12) = 96 ≠ 100

Hence, (21 : 100) is the correct answer.

27. Based on the alphabetical order, three of the following four options are alike in a certain way and thus form a group. Which is the option that does NOT belong to this group? [S.S.C CHSL 17/08/2023 (2nd Shift)]

(a) TSQ
(b) YWU
(c) FEC
(d) MLJ

Correct Answer: (b) YWU

Solution:The pattern followed here is :

Hence, YWU is the correct answer.

28. Based on the alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which of the following does NOT belong to that group? [S.S.C CHSL 17/08/2023 (3rd Shift)]

(a) TVY
(b) QSV
(c) YAC
(d) CEH

Correct Answer: (c) YAC

Solution:The pattern followed here is :

Hence, YAC is the correct answer.

29. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [S.S.C CHSL 17/08/2023 (4th Shift)]

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits.)

(a) 2 - 6
(b) 4 - 20
(c) 5 - 30
(d) 8 - 75

Correct Answer: (d) 8 - 75

Solution:The pattern followed here is :

(1^st number)² + 1^st number = 2^nd number
(2 - 6) → {(2)² + 2} = 6
(4 - 20) → {(4)² + 4} = 20
(5 - 30) → {(5)² + 5} = 30
But,

(8 - 75) → {(8)² + 8} = 72 ≠ 75

Hence, (8 - 75) is the correct answer.

30. The second number in the given number pairs is obtained by performing certain mathematical operations(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (4th Shift)]

(a) 5 : 20
(b) 4 : 12
(c) 7 : 42
(d) 6 : 36

Correct Answer: (d) 6 : 36

Solution:The pattern followed here is :

{(1^st number × (1^st number - 1)} = 2^nd number
(5 : 20) → {5 × (5 - 1)} ⇒ (5 × 4) = 20
(4 : 12) → {4 × (4 - 1)} ⇒ (4 × 3) = 12
(7 : 42) → {7 × (7 - 1)} ⇒ (7 × 6) = 42
But,
(6 : 36) → {6 × (6 - 1)} ⇒ (6 × 5) = 30 ≠ 36

Hence, (6 : 36) is the correct answer.

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Odd One Out (SSC CHSL 2023 Tier – 1) (Part – II)

21. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [S.S.C CHSL 14/08/2023 (4th Shift)]

22. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (1st Shift)]

23. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (1st Shift)]

24. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [S.S.C CHSL 17/08/2023 (1st Shift)]

25. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (2nd Shift)]

26. The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (2nd Shift)]

27. Based on the alphabetical order, three of the following four options are alike in a certain way and thus form a group. Which is the option that does NOT belong to this group? [S.S.C CHSL 17/08/2023 (2nd Shift)]

28. Based on the alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which of the following does NOT belong to that group? [S.S.C CHSL 17/08/2023 (3rd Shift)]

29. Three of the following four are alike in a certain way and thus form a group. Which is the one that does NOT belong to that group? [S.S.C CHSL 17/08/2023 (4th Shift)]

30. The second number in the given number pairs is obtained by performing certain mathematical operations(s) on the first number. The same operation(s) are followed in all the number pairs except one. Find that odd number pair. [S.S.C CHSL 17/08/2023 (4th Shift)]

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