Missing Numbers Quiz Set 037

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Question 1

Examine this series: 6, 8, 20, 36, 76. If another series is written with the same rule, what number would come in the place C: 20, A, B, C, D, E ?

 A

148

 B

130

 C

136

 D

140

Soln.
Ans: a

The number 148 will come in place of (C). 8 = 6 X 2 - 4, then 8 X 2 + 4 = 20, then 20 X 2 - 4 = 36, then 36 X 2 + 4 = 76. Similarly, A = 20 X 2 - 4 = 36, B = 36 X 2 + 4 = 76, C = 76 X 2 - 4 = 148.

Solution | Discuss! | Chapters»

Question 2

Directions: One number is missing in the series. You have to understand the pattern of the series and then insert the missing number.

45, 54, 47, ?, 49, 56, 51, 57, 53

 A

48

 B

55

 C

50

 D

50

Soln.
Ans: b

There are two alternate series in the single series, one of them moves with a sum of 2 starting with 45[see 45, 47, 49, 51, 53], and another is a consecutive series starting with 54. Hence, the missing number will be 55.

Solution | Discuss! | Chapters»

Question 3

In the following number series, one of the numbers does not fit into the series. Find the wrong number.

1, 4, 8, 16, 31, 64, 127, 256

 A

31

 B

16

 C

8

 D

6

Soln.
Ans: c

Number 8 is wrong and should be replaced by 7. The series is 2 X 1 - 1, 2 X 2, 2 X 4 - 1, 2 X 8, 2 X 16 - 1, and so on.

Solution | Discuss! | Chapters»

Question 4

What is missing?

 A

45.

 B

29.

 C

34.

 D

37.

Soln.
Ans: c

Sum of previous two if we move clockwise.

Solution | Discuss! | Chapters»

Question 5

One term in the number series is wrong. Find out the wrong term.

15, 25, 35, 50, 99, 168, 195

 A

25

 B

35

 C

99

 D

195

Soln.
Ans: a

Rest of the terms are either one more, or one less from whole square of any number.

Solution | Discuss! | Chapters»
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Updated on 2020-02-07. Published on: 2016-03-16

Posted by Parveen(Hoven),
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