Odd One Out (SSC CPO 2019 Tier – 1)

1. Choose out the odd one. [SSC CPO 09/12/2019 (Morning)]

(a) 798 : 897 : 798
(b) 432 : 324 : 231
(c) 321 : 213 : 123
(d) 564 : 645 : 456

Correct Answer: (b) 432 : 324 : 231

Solution:Logic: In all the options all three numbers are made up of the same digits
But option (b) is different from others

2. Choose the odd one. [SSC CPO 09/12/2019 (Evening)]

(a) Steam
(b) Grill
(c) Fire
(d) Roast

Correct Answer: (c) Fire

Solution:Fire is used for Grill, Steam and Roast. So, Fire is different from others.

3. Choose the odd one. [SSC CPO 11/12/2019 (Morning)]

(a) Incision
(b) Chisel
(c) Knife
(d) Dagger

Correct Answer: (a) Incision

Solution:Incision means the action of making a surgical cut in skin or flesh (It is activity). Whereas all other options are tools used to cut (all other are objects).

4. Choose the odd one. [SSC CPO 11/12/2019 (Morning)]

(a) 61
(b) 109
(c) 73
(d) 91

Correct Answer: (d) 91

Solution:61, 109, and 73 are prime numbers except 91.

5. Four pairs of numbers have been given out of which three are alike in some manner, while one is different. Choose the odd one. [SSC CPO 11/12/2019 Morning]

(a) 7 : 50
(b) 21 : 462
(c) 14 : 210
(d) 25 : 650

Correct Answer: (a) 7 : 50

Solution:Logic: n : n(n + 1)
But option A does not follow this logic
As 7 : 7(7 + 1) = 7 : 56 (not 50)

6. Select the group that is different. [SSC CPO 11/12/2019 (Evening)]

(a) 632 : 325 : 236
(b) 561 : 615 : 165
(c) 289 : 829 : 928
(d) 426 : 642 : 246

Correct Answer: (a) 632 : 325 : 236

Solution:Logic: All the options consist of only 3 digits. Except (632 : 325 : 236), here 4 digits are used.

7. Select the group that is different. [SSC CPO 11/12/2019 (Evening)]

(a) 17 : 102 : 204
(b) 12 : 72 : 144
(c) 14 : 90 : 180
(d) 26 : 156 : 312

Correct Answer: (c) 14 : 90 : 180

Solution:Logic: n : 6n : 12n
Except (14 : 90 : 180) As, 14 × 6 = 84 not 90.

8. Choose the odd one. [SSC CPO 11/12/2019 (Evening)]

(a) NOQST
(b) EGIKM
(c) BDFHJ
(d) QSUWY

Correct Answer: (a) NOQST

Solution:Logic: +2 rule is used
EGIKM ⇒ E + 2 = G, G + 2 = I, I + 2 = K, K + 2 = M
Except NOQST, where N + 2 = P (not O) and S + 2 = U (not T)

9. Choose the odd one. [SSC CPO 12/12/2019 (Morning)]

(a) 16-64
(b) 26-168
(c) 34-289
(d) 18-81

Correct Answer: (b) 26-168

Solution:Logic: 2n : n²
Except option B all follow the logic:
26 / 2 = 13² = 169 (not 168)

10. Choose the odd one. [SSC CPO 12/12/2019 (Morning)]

(a) Car
(b) Aeroplane
(c) Petrol
(d) Bus

Correct Answer: (c) Petrol

Solution:Cars, airplanes, and buses are all automobiles but Petrol is a fuel.