Missing Numbers Quiz Set 023

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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.

9, 13, 21, 37, 69, 132, 261

 A

21

 B

37

 C

69

 D

132

Soln.
Ans: d

Number 132 is wrong and should be replaced by 133. The series is 9, 9 + 22, 13 + 23, 21 + 24, 37 + 25, 69 + 26, 133 + 27.

Solution | Discuss! | Chapters»

Question 2

What is missing?

 A

4.

 B

6.

 C

9.

 D

8.

Soln.
Ans: b

Look vertically column wise:3 x 5 x 4 = 60, 5 x 7 x 4 = 140, 4 x 4 x ? = 96, ? = 96⁄16 = 6

Solution | Discuss! | Chapters»

Question 3

What is missing?

 A

131.

 B

118.5.

 C

129.

 D

105.5.

Soln.
Ans: a

The series is: 81 x 0.5 + 0.5 = 41, 41 x 1 + 1 = 42, 42 x 1.5 + 1.5 = 64.5, 64.5 x 2 + 2 = 131.

If you are still confused, 81 X 0.5 = 81 X 1/2 = 40.5, so 40.5 + 0.5 = 41.

Solution | Discuss! | Chapters»

Question 4

Find the missing number in fig. (D)

 A

12.

 B

14.

 C

34.

 D

35.

Soln.
Ans: b

The top most number = sum of 1 and 3 number of 3 row. The middle number of row 3 is equal to the sum of numbers of the second row.

Solution | Discuss! | Chapters»

Question 5

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

864, 420, 200, 96, 40, 16, 6

 A

420

 B

200

 C

96

 D

40

Soln.
Ans: c

Pattern of the series from the right end follows the rule:

6 × 2 + 4 = 16, 16 × 2 + 8 = 40, 40 × 2 + 12 = 92, 92 × 2 + 16 = 200 . . . and so on.

Therefore, number 96 should be replaced by 92.

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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