Missing Numbers Quiz Set 021

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Question 1

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

2, 4, 8, 16, 48, 64, 128, 256

 A

4

 B

8

 C

16

 D

48

Soln.
Ans: d

Number 48 is wrong and should be replaced by 32. The series is 2, 4, 8, 16, 32, 64, and so on.

Solution | Discuss! | Chapters»

Question 2

What is missing?

 A

8.

 B

32.

 C

4.

 D

16.

Soln.
Ans: c

162 = 256 ∴ 22 = 4. Although the question can have many answers, this reasoning is most suitable if we look only at the four choices given.

Solution | Discuss! | Chapters»

Question 3

3, 6, 18, 72, (?)

 A

360.

 B

288.

 C

114.

 D

216.

Soln.
Ans: a

3 (x 2), 6 (x 3), 18 (x 4), 72 (x 5), 360.

Solution | Discuss! | Chapters»

Question 4

Directions: Find the missing number in the following series.

6, 7, 9, 13, 21, ?

 A

25

 B

29

 C

37

 D

32

Soln.
Ans: c

Series moves with a difference of 1, 2, 4, 8, 16. Hence, the missing number will be 37.

Solution | Discuss! | Chapters»

Question 5

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

4, 7, 11, 18, 29, 47, ?, 123, 199

 A

76

 B

70

 C

84

 D

102

Soln.
Ans: a

3rd number is the sum of 1st and 2nd, 4th number is the sum of 2nd and 3rd, 5th number is the sum of 3rd and 4th and so on . Hence, missing number will be 29 + 47 = 76    

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

Posted by Parveen(Hoven),
Aptitude Trainer

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