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Number Series Questions For SSC GD PDF

Question 1: In the following question, select the missing number from the given series:
6, 19, 54, 167, 494, ?

a) 1491

b) 1553

c) 1361

d) 1642

Question 2: In the following question, select the missing number from the given series:
67, 70, 74, 77, 81, 84 ?

a) 87

b) 88

c) 86

d) 89

Question 3: In the following question, a series is given with one or more number (s) missing. Choose the correct alternative from the given options.
22, 22, 23, 20, 16, 17, 17, ?, ?, 8

a) 18, 9

b) 12, 13

c) 10, 9

d) 13, 10

Question 4: In the following question, a series is given with one or more number (s) missing. Choose the correct alternative from the given options.
?, 5, 30, 186, 1309, 10480

a) 0.25

b) 0.75

c) 1.00

d) 0

Question 5: In the following question, a series is given with one or more number (s) missing. Choose the correct alternative from the given options.
7, 51, 8, 65, 9, ?

a) 79

b) 80

c) 81

d) 82

Question 6: In the following question, a series is given with one or more number (s) missing. Choose the correct alternative from the given options.
0.2, 0.16, 0.072, 0.0256, ?

a) 0.0016

b) 0.004

c) 0.00512

d) 0.008

Question 7: Which of the following replaces ‘?’ in the following series?
10,21,45,84,500,?

a) 1050

b) 1045

c) 985

d) 1025

Instructions

In the following question, select the missing number from the given series.

Question 8: 84, 42, 44, 22, 24, 12, ?

a) 20

b) 14

c) 24

d) 28

Question 9: 1, 4, 13, 40, 121, ?

a) 284

b) 286

c) 364

d) 396

Instructions

In the following question, select the missing number from the given series.

Question 10: 2, 7, 22, 67, ?

a) 197

b) 198

c) 200

d) 202

Question 11: 1, 8, 29, 92, 281, ?

a) 567

b) 628

c) 776

d) 848

Instructions

In the following question, select the missing number from the given series.

Question 12: 1, 7, 3, 9, 6, 12, 10, 16, 15, ?

a) 18

b) 15

c) 20

d) 21

Question 13: 7, 10, 14, 19, 25, ?

a) 32

b) 36

c) 38

d) 40

Question 14: In the following question, select the missing number from the given series.
?, 5, 15, 45, 113

a) 1

b) 2

c) 3

d) 4

Question 15: In the following question, select the missing number from the given series.
1, 1, 3, 4, 5, 9, 7, 16, 9, 25, 11, ?

a) 17

b) 36

c) 49

d) 37

Instructions

In the following question, select the missing number from the given series.

Question 16: 2.2, 14.8, 40, 90.4, ?

a) 191.2

b) 194.4

c) 196.2

d) 208.4

Question 17: 84, 42, 28, 21, ?

a) 10.5

b) 16.8

c) 18.4

d) 19.6

Question 18: In the following series find 20th number
9, 5, 1, -3 -7, -11,……..

a) -64

b) -75

c) -70

d) -67

Instructions

A series is given, with one from missing, Choose the correct alternative from the given ones that will complete the series.

Question 19: 16, 61, 25, 52, 36, 63, 49, ?

a) 36

b) 94

c) 72

d) 46

Question 20: Find the wrong number in the given series ?
15, 28, 30, 39, 48

a) 28

b) 15

c) 30

d) 39

Difference between the numbers is in the form of $[x][x^{2}]$

$10+[1][1^{2}]=10+11=21$
$21+[2][2^{2}]=21+24=45$
$45+[3][3^{2}]=45+39=84$
$84+[4][4^{2}]=84+416=500$

Next number:
$500+[5][5^{2}]=500+525=1025$

The given series is an arithmetic progression with first term $a=9$ and common difference $d=-4$

$n^{th}$ term in an A.P. = $A_n=a+(n-1)d$

=> $A_{20}=9+(20-1)\times(-4)$

= $9+(19)(-4)$

= $9-76=-67$

=> Ans – (D)