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

Total Questions: 30

11. Four triads of numbers have been given out of which three are alike in some manner and one is different. Select the one that is different. [SSC CHSL 11/08/2023 (2nd Shift)]

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

(a) 25 - 45 - 65
(b) 8 - 28 - 48
(c) 38 - 58 - 78
(d) 17 - 27 - 67

Correct Answer: (d) 17 - 27 - 67
Note:

Logic: (1st num) + 20 = (2nd num) and (2nd num + 20) = 3rd num
25 - 45 - 65 → 25 + 20 = 45 and 45 + 20 = 65
8 - 28 - 48 → 8 + 20 = 28 and 28 + 20 = 48
38 - 58 - 78 → 38 + 20 = 58 and 58 + 20 = 78
But, 17 - 27 - 67 → 17 + 20 = 37 (Not 27) and 37 + 20 = 57 (Not 67)

12. 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? [SSC CHSL 11/08/2023 (3rd Shift)]

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

(a) 153 - 17
(b) 261 - 29
(c) 94 - 11
(d) 207 - 23

Correct Answer: (c) 94 - 11
Note:

Logic: (1st number ÷ 9) = 2nd number
(153 ÷ 9) = 17
(261 ÷ 9) = 29
(207 ÷ 9) = 23
But 94 ÷ 9 ≠ 11

13. Four-letter clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different. [SSC CHSL 11/08/2023 (3rd Shift)]

(a) TVZB
(b) OPRS
(c) GIMO
(d) JLPR

Correct Answer: (b) OPRS
Note:

14. 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? [SSC CHSL 11/08/2023 (4th Shift)]

(a) KMQ
(b) BDH
(c) YAE
(d) JLN

Correct Answer: (d) JLN
Note:

15. Select the option in which the numbers do NOT share the same relationship as that shared by the given pairs of numbers. [SSC CHSL 11/08/2023 (4th Shift)]

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

32 : 65 and 35 : 71

(a) 21 : 43
(b) 46 : 93
(c) 17 : 35
(d) 30 : 59

Correct Answer: (d) 30 : 59
Note:

Logic: (1st no. × 2) + 1 = 2nd no.
32 : 65 → (32 × 2) + 1 = 64 + 1 = 65
35 : 71 → (35 × 2) + 1 = 70 + 1 = 71
21 : 43 → (21 × 2) + 1 = 42 + 1 = 43
46 : 93 → (46 × 2) + 1 = 92 + 1 = 93
17 : 35 → (17 × 2) + 1 = 34 + 1 = 35
But, 30 : 59 → (30 × 2) + 1 = 60 + 1 = 61 (Not 59)

16. Select the word-pair that does NOT represent a similar relationship to the one expressed in the pair of words given below. [SSC CHSL 11/08/2023 (4th Shift)]

(The words must be considered as meaningful English words and must not be related to each other based on the number of letters/number of consonants/vowels in the word.)

Astonishing : Incredible

(a) Clarify : Elaborate
(b) Descend : Ascend
(c) Stop : Terminate
(d) Brave : Fearless

Correct Answer: (b) Descend : Ascend
Note:

Astonishing is the synonym of Incredible.
All the given options are synonyms of each other, except the option b, in which ‘descend’ and ‘ascend’ are opposite to each other.

17. 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. [SSC CHSL 14/08/2023 (1st Shift)]

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

(a) 31 : 215
(b) 29 : 201
(c) 21 : 145
(d) 25 : 177

Correct Answer: (d) 25 : 177
Note:

Logic: (1st num × 7) - 2 = 2nd num
31 : 215 → (31 × 7) - 2 = 217 - 2 = 215
29 : 201 → (29 × 7) - 2 = 203 - 2 = 201
21 : 145 → (21 × 7) - 2 = 147 - 2 = 145
But, 25 : 177 → (25 × 7) - 2 = 175 - 2 = 173 (Not 177)

18. Based on the alphabetical order, 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? [SSC CHSL 14/08/2023 (1st Shift)]

(a) QMS
(b) HDC
(c) VRX
(d) DZF

Correct Answer: (b) HDC
Note:

19. Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different. [SSC CHSL 14/08/2023 (1st Shift)]

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

216 : 40, 72 : 22, 112 : 32, 312 : 82

(a) 216 : 40
(b) 112 : 32
(c) 312 : 82
(d) 72 : 22

Correct Answer: (a) 216 : 40
Note:

Logic:
(2nd number × 4) - 16 = 1st number
72 : 22 → (22 × 4) - 16 = 88 - 16 = 72
112 : 32 → (32 × 4) - 16 = 128 - 16 = 112
312 : 82 → (82 × 4) - 16 = 328 - 16 = 312
But, 216 : 40 → (40 × 4) - 16 = 160 - 16 = 144 (Not 216)

20. Three of the following number triads are alike in some manner and one is different. Select the odd number triads. [SSC CHSL 14/08/2023 (2nd Shift)]

(NOTE: The second and third numbers in the given number triads are formed by performing a certain operation on the first number. The same operation is followed in all the number triads except one. Find that odd number triads.)

(a) 4 : 16 : 12
(b) 15 : 225 : 210
(c) 11 : 121 : 110
(d) 7 : 49 : 40

Correct Answer: (d) 7 : 49 : 40
Note:

Logic:
2nd num. = (1st num.)², 3rd num. = (2nd - 1st) num.
(4 : 16 : 12) : 16 = (4)², 12 = 16 - 4
(15 : 225 : 210): 225 = (15)², 210 = 225 - 15
(11 : 121 : 110): 121 = (11)², 110 = 121 - 11
But, (7 : 49 : 40) : 49 = (7)², 40 ≠ 49 - 7

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

11. Four triads of numbers have been given out of which three are alike in some manner and one is different. Select the one that is different. [SSC CHSL 11/08/2023 (2nd Shift)]

12. 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? [SSC CHSL 11/08/2023 (3rd Shift)]

13. Four-letter clusters have been given, out of which three are alike in some manner and one is different. Select the one that is different. [SSC CHSL 11/08/2023 (3rd Shift)]

14. 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? [SSC CHSL 11/08/2023 (4th Shift)]

15. Select the option in which the numbers do NOT share the same relationship as that shared by the given pairs of numbers. [SSC CHSL 11/08/2023 (4th Shift)]

16. Select the word-pair that does NOT represent a similar relationship to the one expressed in the pair of words given below. [SSC CHSL 11/08/2023 (4th Shift)]

17. 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. [SSC CHSL 14/08/2023 (1st Shift)]

18. Based on the alphabetical order, 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? [SSC CHSL 14/08/2023 (1st Shift)]

19. Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different. [SSC CHSL 14/08/2023 (1st Shift)]

20. Three of the following number triads are alike in some manner and one is different. Select the odd number triads. [SSC CHSL 14/08/2023 (2nd Shift)]

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