Missing Numbers Quiz Set 022

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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.

1, 2, 6, 24, 120, 620, 5040

 A

5040

 B

620

 C

120

 D

24

Soln.
Ans: b

Number 620 is wrong and should be replaced by 720. The series is: 1 X 2 gives 2, then 2 X 3 gives 6, then 6 X 4 gives 24, then 24 X 5 gives 120, then 120 X 6 should give 720, not 620.

Solution | Discuss! | Chapters»

Question 2

What is missing?

 A

41.

 B

64.

 C

35.

 D

61.

Soln.
Ans: b
(1)3 , (2)3 and (3)3 ∴ 43 = 64
Solution | Discuss! | Chapters»

Question 3

Find the missing number.

100, 50, 52, 26, 28, ?, 16, 8

 A

30

 B

36

 C

14

 D

32

Soln.
Ans: c

2nd number is half of 1st number, 4th number is half of 3rd number and so on.

Solution | Discuss! | Chapters»

Question 4

What is missing?

 A

47.

 B

49.

 C

57.

 D

50.

Soln.
Ans: b
Solution | Discuss! | Chapters»

Question 5

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

4, 9, 19, 43, 90, 185, 375

 A

9

 B

19

 C

90

 D

185

Soln.
Ans: b

Series follows the pattern: 4 × 2 + 1 = 9, 9 × 2 + 2 = 20, 20 × 2 + 3 = 43, 43 × 2 + 4 = 90 and so on. Hence, the number 19 should be replaced by 20. So 19 is wrong.

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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