Question 1

1, 5, 13, 25, 41,?

Accepted Answer

The given series is in pattern + 4, + 8, + 12, + 16, ............... So, the missing term = 41 + 20 = 61

Question 2

1, 1, 2, 6, 24,?, 720

Accepted Answer

The given series is the pattern x1, x2, x3, x4, ............. so, the missing term = 24 x 5 = 120

Question 3

6, 13, 28, 59,?

Accepted Answer

the given series is in the pattern x 2 + 1, x 2 + 2, x 2 + 3,............ So, the missing term = 59 x 2 +4 = 122

Question 4

3, 15,?, 63, 99, 143

Accepted Answer

The given series is in the pattern (22 - 1), (42 - 1),............ (82 - 1), (102 - 1), (122 - 1). So, the missing term is (62 - 1) = 35

Question 5

5760, 960,?, 48, 16, 8

Accepted Answer

The given series is in pattern ÷ 6, ÷ 5, ÷ 4, ÷ 3, ÷ 2. So the missing term is 960 ÷ 5 = 192

Question 6

12, 15, 19, 24,?

Accepted Answer

The difference between the numbers increases by 1.

Question 7

72, 63, 54, 45, ...?......

Accepted Answer

The gap is of -9

Question 8

8, 64, 216, 516, 512, 1000, 1728,?

Accepted Answer

Series is 23 , 43 , 63 , 83 , 103 , 123 , .... Then, ? = 143 = 2744

Question 9

81, 512, 2401, 7776, 15625, 16384,?

Accepted Answer

Option (e) Series is 92 , 83 , 74 , 65 , 56 , 47 , 38 ? = 38 , = 6561

Question 10

6, 26, 134, 666, 3334, 16666,?

Accepted Answer

6 x 5 -4 = 26 26 x 5 + 4 =134 134 x 5 - 4 =666 666 x 5 + 4 = 3334 3334 x 5 -4 = 16666 16666 x 5 + 4 = ? ? = 83334

Question 11

16, 24, 48, 120, 360, 1260,?

Accepted Answer

The series is x 1.5, x 2, x 2.5, x 3, x 3.5

Question 12

529, 841, 961, 1369, 1681, 1849,?

Accepted Answer

The series is : 232, 292, 312, 372, 412, ..........(Square of prime numbers)

Question 13

20, 24, 33, 49, 74, 110?

Accepted Answer

The series is : 22, + 32, + 42, + 52, + 62, ..........

Question 14

796, 675, 554, 433, ...?....

Accepted Answer

The difference of the number is (- 121).

Question 15

231, 342, 453, 564, .....?.....

Accepted Answer

the difference of the numbers (+ 111).

Question 16

499, 622, 868, 1237, 1729, 2344,?

Accepted Answer

The series is + 123, + (123 x 2), +(123 x 3), + (123 x 4), ...

Question 17

8, 31, 122, 485, 1936, 7739,?

Accepted Answer

The series is x 4 -1, x 4 - 2, x 4 - 3, x 4 - 4, ....,

Question 18

274, 301, 426, 769, 1498, 2824, 5026

Accepted Answer

The series is ; + 33, + 53, + 73, + 93, + 113, + 133, ............

Question 19

14, 22, 34.5, 55.5, 87.25, 135.875, 209.125

Accepted Answer

None of these

Question 20

10 ,15 , 24 , 35 , 54 ,75 ,100

Accepted Answer

The given series is in the below pattern, First term = 10 Second term = First term + 5 = 15 ⇒ Second term = 10 + 5 =15 , Third term = Second term + 9 = 24 ⇒ Third term = 15 + 9 = 24 , Similarly , we can find the all others terms also. 24 + 13 = 35, is wrong. It should be 37. Fourth term = Third term + 13 = 37 + 17 = 54 , Fifth term = Fourth term + 17 = 54 + 21 = 75 , Sixth term = Fifth term + 21 = 75 + 25 = 100 The difference in successive nos. 9 – 5 = 13 – 9 = 17 – 13 = 21 - 17 = 4. Hence, 35 is wrong. It should be 37.

Number Series Questions