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

Total Questions: 30

1. Three of the following number triads are alike in some manner and one is different. Select the odd number triad. [S.S.C CHSL 10/08/2023 (1st 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 triad.)

(a) 20 : 400 : 200
(b) 9 : 81 : 45
(c) 13 : 169 : 84.5
(d) 25 : 625 : 312.5

Correct Answer: (b) 9 : 81 : 45

Solution:The pattern followed here is :

(1^st number)² = 2^nd number and (2^nd number ÷ 2) = 3^rdnumber
(20 : 400 : 200) → 20² = 400 and (400 ÷ 2) = 200
(13 : 169 : 84.5) → 13² = 169 and (169 ÷ 2) = 84.5
(25 : 625 : 312.5) → 25² = 625 and (625 ÷ 2) = 312.5
But,

(9 : 81 : 45) → 9² = 81 and (81 ÷ 2) = 40.5 (Not 45)

Hence, (9 : 81 : 45) is the correct answer.

2. 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 10/08/2023 (1st Shift)]

(a) RUY
(b) GJN
(c) BEI
(d) NQV

Correct Answer: (d) NQV

Solution:The pattern followed here is :

Hence, NQV is the correct answer.

3. 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. [S.S.C CHSL 10/08/2023 (2nd Shift)]

(a) 37 : 152
(b) 61 : 248
(c) 39 : 160
(d) 53 : 208

Correct Answer: (d) 53 : 208

Solution:The pattern followed here is :
{(1^st number × 4) + 4} = 2^nd number
(37 : 152) → {(37 × 4) + 4} ⇒ (148 + 4) = 152
(61 : 248) → {(61 × 4) + 4} ⇒ (244 + 4) = 248
(39 : 160) → {(39 × 4) + 4} ⇒ (156 + 4) = 160
But,

(53 : 208) → {(53 × 4) + 4} ⇒ (212 + 4) = 216 (Not 208)

Hence, (52 : 208) is the correct answer.

4. 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 10/08/2023 (3rd Shift)]

(a) 18-37
(b) 33-67
(c) 29-59
(d) 27-53

Correct Answer: (d) 27-53

Solution:The pattern followed here is :
{(1^st number × 2) + 1} = 2^nd number
(18 - 37) → {(18 × 2) + 1} = 37
(33 - 67) → {(33 × 2) + 1} = 67
(29 - 59) → {(29 × 2) + 1} = 59
But,

(27 - 53) → {(27 × 2) + 1} = 55 (Not 53)

Hence, (27 - 53) is the correct answer.

5. 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 10/08/2023 (3rd Shift)]

(a) ZAX
(b) KLI
(c) VWT
(d) IJH

Correct Answer: (d) IJH

Solution:The pattern followed here is :

Hence, IJH is the correct answer.

6. 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 10/08/2023 (4th Shift)]

(a) 6 : 12
(b) 10 : 60
(c) 8 : 40
(d) 7 : 21

Correct Answer: (c) 8 : 40

Solution:The pattern followed here is :

(1^st number) × (1^st number - 4) = 2^nd number
(6 : 12) → {6 × (6 - 4)} ⇒ (6 × 2) = 12
(10 : 60) → {10 × (10 - 4)} ⇒ (10 × 6) = 60

(7 : 21) → {7 × (7 - 4)} ⇒ (7 × 3) = 21
But,

(8 : 40) → {8 × (8 - 4)} ⇒ (8 × 4) = 32 (Not 40)

Hence, (8 : 40) is the correct answer.

7. 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. [S.S.C CHSL 11/08/2023 (1st Shift)]

(a) 63 : 137
(b) 70 : 151
(c) 47 : 83
(d) 34 : 79

Correct Answer: (c) 47 : 83

Solution:The pattern followed here is :

(1^st number × 2) + 11 = 2^nd number
(63 : 137) → {(63 × 2) + 11} ⇒ (126 + 11) = 137
(70 : 151) → {(70 × 2) + 11} ⇒ (140 + 11) = 151
(34 : 79) → {(34 × 2) + 11} ⇒ (68 + 11) = 79
But,

(47 : 83) → {(47 × 2) + 11} ⇒ (94 + 11) = 105 (Not 83)

Hence, (47 : 83) is the correct answer.

8. 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 11/08/2023 (1st Shift)]

(a) NOR
(b) LNP
(c) DEH
(d) LMP

Correct Answer: (b) LNP

Solution:The pattern followed here is :

Hence, LNP is the correct answer.

9. Based on the English 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? [S.S.C CHSL 11/08/2023 (2nd Shift)]

(a) RPT
(b) YWA
(c) FDH
(d) EJN

Correct Answer: (d) EJN

Solution:The pattern followed here is :

Hence, EJN is the correct answer.

10. 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. [S.S.C CHSL 11/08/2023 (2nd Shift)]

(a) 31 : 138
(b) 21 : 120
(c) 27 : 150
(d) 29 : 160

Correct Answer: (a) 31 : 138

Solution:The pattern followed here is :

(1^st number × 5) + 15 = (2^nd number)
(29 : 160) → {(29 × 5) + 15} ⇒ (145 + 15) = 160
(27 : 150) → {(27 × 5) + 15} ⇒ (145 + 15) = 150
(21 : 120) → {(21 × 5) + 15} ⇒ (105 + 15) = 120
But,

(31 : 138) → {(31 × 5) + 15} ⇒ (155 + 15) = 170 (Not 138)

Hence, (31 : 138) is the correct answer.

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

1. Three of the following number triads are alike in some manner and one is different. Select the odd number triad. [S.S.C CHSL 10/08/2023 (1st Shift)]

2. 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 10/08/2023 (1st Shift)]

3. 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. [S.S.C CHSL 10/08/2023 (2nd Shift)]

4. 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 10/08/2023 (3rd Shift)]

5. 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 10/08/2023 (3rd Shift)]

6. 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 10/08/2023 (4th Shift)]

7. 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. [S.S.C CHSL 11/08/2023 (1st Shift)]

8. 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 11/08/2023 (1st Shift)]

9. Based on the English 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? [S.S.C CHSL 11/08/2023 (2nd Shift)]

10. 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. [S.S.C CHSL 11/08/2023 (2nd Shift)]

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