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Number series practice

Q101. Find the missing term in the series :

56, 89, 33, 21, 57, 88, 35, 19, 60, 85, 30, ?

A. 24
B. 32
C. 35
D. 45

Ans. A

Explanation :

56+89+33+21 = 199
57+88+35+19 = 199
60+85+30+? = 175+?
? = 199-175 = 24

Q102. Find the missing term in the series :

1, 2, 3, 4, 5, 6, 7, ?

A. 9
B. 5
C. 10
D. 8

Ans. D

Q103. Find the missing term in the series :

7, 4, 6, 3, 4.5, 1.5, 2.25, ?

A. 0
B. 2.5
C. 1.5
D. -0.75

Ans. D

Explanation :

Observe the Pattern
7–4 = 3
6–3 = 3
4.5–1.5 = 3
2.25–3 = -0.75

Q104. Find the missing term in the series :

0.5, 2, 3, 4.5, 6.75, ?

A. 6.75
B. 1.5
C. 8.25
D. 9

Ans. C

Explanation :

Observe the Pattern
0.5+1.5 = 2
2*1.5 = 3
3+1.5 = 4.5
4.5*1.5 = 6.75
6.75+1.5 = 8.25

Q105. Find the missing term in the series :

4.2, 26, 8.9, 8.4, 52, 178, 16.8, 104, ?

A. 25
B. 35.6
C. 28.6
D. 36.3

Ans. B

Q106. Find the missing term in the series :

3, 4.5, 7, 4, 6, 5, ?

A. 2
B. 3
C. 4
D. 5

Ans. A

Q107. Find the missing term in the series :

7776, 625, 64, 9, ?

A. 6
B. 4
C. 3
D. 5

Ans. B

Q108. Find the missing term in the series :

11, 8, 17, 14, 23, 24, 31, 32, ?

A. 41
B. 32
C. 24
D. 25

Ans. A

Q109. Find the missing term in the series :

0, 8, 12, 26, 23 , 43, ?

A. 23
B. 33
C. 28
D. 30

Ans. B

 

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