Complete the Series NET mcqs with solution

NUST Entrance Test (NET)

Intelligence Questions

Sequence (Series Completion)

1.         6, 13, 28, 59, ?

A. 111

B. 122

C. 126

D. 128

The pattern is × 2 + 1, × 2 + 2, × 2 + 3 +.....
So, missing term = 59 × 2 + 4 = 112.

2.         4, 12, 36, 108, ?

A. 124

B. 216

C. 304

D. 324

The pattern is × 3.
So, missing term = 108 × 3 = 324.

3.         1, 3, 4, 8, 15, 27, ?

A. 45

B. 50

C. 55

D. 60

The Sum of any three consecutive terms of the series given to the next term.
So, missing number = 8 + 15 + 27 = 50.

Good news! 

If you are an Android user,you can get NUST entry test at your finger tips.Simply install NUST entry test preparation app and get benefited by secret tricks.

4.         3, 12, 27, 48, 75, 108, ?

A. 147

B. 157

C. 163

D. 182

The terms of the given series are 3 × 1², 3 × 2², 3 × 3², 3 × 4², 
3 × 5², 3 × 6², .......
So, missing term = 3 × 7² = 3 × 49 = 147.

5.         28, 33, 31, 36, -----, 39?

A. 30

B. 32

C. 33

D. 34

The pattern is + 5, - 2, + 5, - 2, ....
So missing term = 36 - 2 = 34.

6.         0.5, 0.55, 0.65, 0.8?

A. 0.7

B. 0.9

C. 0.95

D. 1

The pattern is + 0.05, + 0.10, + 0.15, .....
So, missing term = 0.8 + 0.20 = 1.

7.         1, 4, 27, 16, ?, 36, 343

A. 50

B. 78

C. 125

D. 132

Clearly, the given series consists of cubes of odd numbers and square of even numbers i.e., 1³, 2², 3³, 4², .....
So, missing term = 5³ = 125.

8.         6, 11, 21, 36, 56, ?

A. 41

B. 51

C. 71

D. 81

The pattern is + 5, + 10, + 15, + 20,....
So, missing term = 56 + 25 = 81.

9.         13, 35, 57, 79, 911, ?

A. 1113

B. 1315

C. 1110

D. 1140

The terms of the given series are numbers formed by joining together consecutive odd numbers in order.
i.e. 1 and 3, 3 and 5, 5 and 7, 7 and 9, 9 and 11,.....
So, missing term = number of formed by joining 11 and 13 = 1113.

10.       11, 10, ?, 100, 1001, 1000, 10001

A. 101

B. 110

C. 111

D. 121

The pattern is - 1, × 10 + 1, - 1, × 10 + 1, - 1, × 10 + 1, ....
So, missing term = 10 × 10 + 1 = 101.

11.       1, 4, 9, 16, 25, ?

A. 24

B. 36

C. 41

D. 43

The numbers are 1², 2², 3³, 4², .... 
So missing number = 6² = 36.

12.       10, 14, 26, 42, 70, ?

A. 100

B. 102

C. 106

D. 114

Each term of the series, except the first two terms, is 2 more than the sum of the preceding two terms
So, missing term = (42 + 70 ) = 114.

13.       1, 9, 25, 49, 81, ?

A. 103

B. 112

C. 121

D. 144

The series consists of squares of consecutive prime numbers i.e. 1², 3², 5², 7², 9²,.....
So, missing term = 11² = 121.

14.       2, 6, 12, 20, 30, 42, 56, ?

A. 50

B. 60

C. 72

D. 78

The sequence is 1 × 2, 2 × 3, 3 × 4, 4 × 5, 6 × 7, 7 × 8.
So missing term = 8 × 9 = 72.

15.       1, 9, 25, 49, ?, 121

A. 72

B. 76

C. 78

D. 81

The given series consists of squares of consecutive odd numbers. i.e. 1², 3², 5², 7², ....
So, missing term = 9² 81.

16.       90, 180, 12, 50, 100, 200, ?, 3, 50, 4, 25, 2, 6, 30, 3

A. 125

B. 150

C. 175

D. 250

Clearly, 90 = 30 ×3, 180 = 6 × 30, 12 = 2 ×6, 50 = 25 ×2, 
100 = 4 × 25, 200 = 50 × 4.
So, missing term = 3 × 50 = 150.

17.       5, 6, 9, 15, ?, 40

A. 21

B. 23

C. 25

D. 27

The pattern is + 1, + 3, + 6,.....
i.e. + 1, + (1, + 2), + ( 1 + 2 + 3),....
So missing term = 15 + ( 1 + 2 + 3 + 4 ) = 25.

18.       120, 99, 80, 63, 48, ?

A. 32

B. 35

C. 38

D. 39

The pattern is - 21, - 19, - 17, - 15,.......
So, missing term = 48 - 13 = 35.

19.       4, 10, ?, 82, 244, 730

A. 24

B. 28

C. 77

D. 218

Each number in the series is 2 less than thrice the preceding number.
So missing number = ( 10 × 3 ) - 2 = 28.

20.       1, 1, 2, 6, 24, ?, 720

A. 101

B. 106

C. 110

D. 120

The pattern is ×1, ×2, ×3, ×4,...
So, missing term = 24 × 5 = 120.

21.       2, 2, 5, 13, 28, ?

A. 47

B. 49

C. 50

D. 52

The pattern is + 0, + 3, + 8, + 15, .....
i.e. + ( 1² - 1 ), + ( 2² - 1 ), + ( 3² - 1 ) + ( 4² - 1 ),... 
So, missing term = 28 + ( 5 ² - 1) = 28 + 24 = 52.

22.       11, 13, 17, 19, 23, 25, ?

A. 25

B. 27

C. 29

D. 31

The pattern is + 2, + 4, + 2, + 4, .....
So, missing term = 25 + 4 = 29.

23.       66, 36, 18, ?

A. 3

B. 6

C. 7

D. 8

Each term in the series is the product of the digits of the preceding term.
So, missing term = 1 × 8 = 8.

24.       5, 2, 7, 9, 16, 25, ?

A. 41

B. 43

C. 45

D. 48

Each term in the series, except the first two terms, is the sum of the preceding two terms.
So, missing term = 16 + 25 = 41.

25.       563, 647, 479, 815, ?

A. 672

B. 386

C. 279

D. 143

The pattern is + 84, - 168, + 336,......
i.e. + 84, - ( 84 × 2), + ( 84 × 2²), .....
So, missing term = 815 - ( 84 × 2³) = 815 - 672 = 143.