Series (SSC CPO 2019 Tier – 1)

Total Questions: 7

1. Identify the number that is NOT related to the following series: [S.S.C CPO 19/12/2019 (Morning)]

25, 28, 23, 30, 21, 33

Correct Answer: (d) 33
Solution:The pattern followed here is :

we can see that 33 does not belong to this series.

Hence, "33" is the correct answer.

2. K, J, L, I, ?, H [S.S.C CPO 09/12/2019 (Morning)]

Correct Answer: (d) M
Solution:The pattern followed here is :

Hence, "M" is the correct answer.

3. Identify the number that does NOT belong to the following series: [S.S.C CPO 09/12/2019 (Morning)]

104, 108, 54, 58, 29, 31

Correct Answer: (d) 31
Solution:The pattern followed here is :

we can see that 31 does not belong to this series.

Hence, "31" is the correct answer.

4. 14, 17, 23, 32, 44, 59, ? [S.S.C CPO 09/12/2019 (Evening)]

Correct Answer: (b) 77
Solution:The pattern followed here is :

Hence, "77" is the correct answer.

5. B, C, E, ?, Q, G [S.S.C CPO 09/12/2019 (Evening)]

Correct Answer: (b) t
Solution:The pattern followed here is :

The given series is B, C, E, ?, Q, G.
Here, the gap between the alphabets is:
+1 → +2 → +4 → +8 → +16
E + 4 → I and I + 8 → Q
So, the missing letter is I.

Hence, "I" is the correct answer.

6. DXB, GSI, JNP, MIW, ____ [S.S.C CPO 11/12/2019 (Morning)]

Correct Answer: (c) PDD
Solution:The pattern followed here is :

first letter +3, second letter -5, and third letter +7.
So, M + 3 = P, I - 5 = D, W + 6 = D.

Hence, "PDD" is the correct answer.

7. In the following number series, two numbers have been put within brackets. Select the most appropriate option for these numbers in relation to their inclusion in the series. [S.S.C CPO 12/12/2019 (Evening)]

0, 7, 26, (65), 124, 215, (344), 511

Correct Answer: (c) Both the bracketed numbers are incorrect.
Solution:The pattern followed here is :

n³ - 1
4³ - 1 = 63

7³ - 1 = 342

Hence, both the bracketed numbers are incorrect.