Missing Numbers Quiz Set 034

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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.

104, 101, 90, 86, 76, 71, 62, 55

 A

55

 B

62

 C

76

 D

86

Soln.
Ans: a

Number 55 is wrong and should be replaced by 56. There are two series - 104, 90, 76, 62 with a difference of 14, and 101, 86, 71, 56 with a difference of 15.

Solution | Discuss! | Chapters»

Question 2

Examine this series: 140, 68, 36, 16, 10, 3. If another series is written with the same rule, what number would come in the place C: 284, A, B, C, D, E ?

 A

50

 B

34

 C

64

 D

52

Soln.
Ans: b

The number 34 will come in place of (C). (284/2) - 2 = 140, (140/2) + 2 = 72, (72/2) - 2 = 34

Solution | Discuss! | Chapters»

Question 3

Directions : One number is wrong in the series. Find out the wrong number.

1, 2, 6, 21, 84, 445, 2676

 A

2

 B

6

 C

21

 D

84

Soln.
Ans: d

Series of the pattern:

1 × 1 + 1 = 2, 2 × 2 + 2 = 6, 6 × 3 + 3 =21, 21 × 4 + 4 =88, 88 × 5 + 5 = 445, 445 × 6 + 6 = 2676.

Therefore, number 84 should be replaced by 88.

Solution | Discuss! | Chapters»

Question 4

Find the missing number.

101, 100, ?, 87, 71, 46

 A

92

 B

88

 C

89

 D

96

Soln.
Ans: d

Difference of each successive number is the square of a natural number. 101 - 100 = 1, 100 - 96 = 22, and so on

Solution | Discuss! | Chapters»

Question 5

What is missing?

 A

40.

 B

38.

 C

44.

 D

39.

Soln.
Ans: b
9 + (2)2 = 13, 13 + (3)2 = 22, 22 + (4)2 = 38
Solution | Discuss! | Chapters»
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Updated on 2020-02-07. Published on: 2016-03-16

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