Odd One Out (SSC CGL 2019 Tier – 1)

(Sum of digit of 1^st number × Difference of digit of 1^st number) = 2^nd number

(39 - 72) → {(3 + 9) × (9 - 3)} ⇒ (12 × 6) = 72

(28 - 60) → {(2 + 8) × (8 - 2)} ⇒ (10 × 6) = 60

(42 - 12) → {(4 + 2) × (4 - 2)} ⇒ (6 × 2) = 12

But,

(57 - 38) → {(5 + 7) × (7 - 5)} ⇒ (12 × 2) = 24 ≠ 38

Hence, "(57 - 38)" is the odd one.

2^nd number is divisible by 1^st number 

(11 - 143) → 143 ÷ 11 = 13 (143 is divisible by 11)

(6 - 174) → 174 ÷ 6 = 29 (174 is divisible by 6)

(5 - 155) → 155 ÷ 5 = 31 (155 is divisible by 5)

But,

(8 - 38) → 38 ÷ 8 = (38 is not divisible by 8)

Hence, "(8 - 38)" is the odd one.

The pattern followed here is :

{(1^st number + 1)² + 2} = 2^nd number

(10 : 123) → {(10 + 1)² + 2} ⇒ (11² + 2) ⇒ (121 + 2) = 123

(14 : 227) → {(14 + 1)² + 2} ⇒ (15² + 2) ⇒ (225 + 2) = 227

(11 : 146) → {(11 + 1)² + 2} ⇒ (12² + 2) ⇒ (144 + 2) = 146

But,

(17 : 290) → {(17 + 1)² + 2} ⇒ (18² + 2) ⇒ (324 + 2) = 326 ≠ 290

Hence, "(17 : 290)" is the odd one.

The pattern followed here is :

{1^st letter + 2 = 2^nd letter}, {2^nd letter + 2 = 3^rd letter}

LNP → (L + 2 = N) & (N + 2 = P)

FHJ → (F + 2 = H) & (H + 2 = J)

DFH → (D + 2 = F) & (F + 2 = H)

But,

TVW → (T + 2 = V) & (V + 2 ≠ W)

Hence, "TVW" is the odd one.

The pattern followed here is :

{Positioning value of 1^st letter × Positioning value of 2^nd letter = 3^rd letter

DDP → D(4) × D(4) = P(16)

BJT → B(2) × J(10) = T(20)

FBL → F(6) × B(2) = L(12)

But,

GCV → G(7) × C(3) = U(21) ≠ V(22)

Hence, "GCV" is the odd one.

But,

SWJK does not contain a single vowel.

Hence, "SWJK" is the odd one.

The sum of the digits of the 1^st number = 2^nd number

(26584 : 25) → 2 + 6 + 5 + 8 + 4 = 25

(85245 : 25) → 8 + 5 + 2 + 4 + 5 = 24

(77052 : 21) → 7 + 7 + 0 + 5 + 2 = 21

But,

(41263 : 18) → 4 + 1 + 2 + 6 + 3 = 16 ≠ 18

Hence, "(41263 : 18)" is the odd one.

{(1^st number × 3) + 4} = 2^nd number

(44 : 136) → (44 × 3) + 4 ⇒ (132 + 4) = 136

(27 : 85) → (27 × 3) + 4 ⇒ (81 + 4) = 85

(30 : 94) → (30 × 3) + 4 ⇒ (90 + 4) = 94

But,

(33 : 109) → (33 × 3) + 4 ⇒ (99 + 4) = 103 ≠ 109

Hence, "(33 : 109)" is the odd one.

The pattern followed here is :

{1^st letter + 3 = 2^nd letter}, {2^nd letter + 3 = 3^rd letter} & {3^rd letter + 3 = 4^th letter}

TWZC → (T + 3 = W), (W + 3 = Z) & (Z + 3 = C)

PSVY → (P + 3 = S), (S + 3 = V) & (V + 3 = Y)

EHKN → (E + 3 = H), (H + 3 = K) & (K + 3 = N)

But,

NOSV → (N + 3 ≠ O), (O + 3 ≠ S) & (S + 3 = V)

Hence, "NOSV" is the correct answer.

{(1^st letter × 7) + 7} = 2^nd letter

(53 : 378) → (53 × 7) + 7 ⇒ (371 + 7) = 378

(37 : 266) → (37 × 7) + 7 ⇒ (259 + 7) = 266

(45 : 322) → (45 × 7) + 7 ⇒ (315 + 7) = 322

But,

(43 : 318) → (43 × 7) + 7 ⇒ (301 + 7) = 308 ≠ 318

Hence, "(43 : 318)" is the odd one.