# Missing Numbers Quiz Set 001

### Question 1

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

5, 7.5, 11.25, 17.5, 29.75, 50, 91.25

A

7.5

B

17.5

C

29.75

D

91.25

Soln.
Ans: c

Number 29.75 is wrong and should be replaced by 28.75 . The series is: 5 + (1.25 X 2) gives 7.5, 7.5 + (1.25 X 3) gives 11.25, then 11.25 + (1.25 X 5) gives 17.5, then 17.5 + (1.25 X 9) gives 28.75, then 28.75 + (1.25 X 17) gives 50, then 50 + (1.25 X 33) gives 91.25. The multipliers of 1.25 increase by 1, 2, 4, 8, 16

### Question 2

1, 0, 3, 2, 5, 4, (?)

A
9
B
10
C
8
D
7
Soln.
Ans: d
1 ( - 1), 0 ( + 3), 3 ( - 1), 2 ( + 3), 5 ( - 1), 4 ( +3), 7

What is missing?

A

36.

B

49.

C

25.

D

50.

Soln.
Ans: c

### Question 4

What is missing?

A

10.

B

15.

C

32.

D

12.

Soln.
Ans: c

32. Move in clockwise direction from top left corner that contains 1. Each number is obtained by multiplying the preceding number by one that follows: 1 x 2 = 2; 2 x 2 = 4; 2 x 4 = 8; 4 x 8 = 32;

### Question 5

What is missing?

A

92.

B

72.

C

62.

D

99.

Soln.
Ans: d

21 + 31 = 52, 39 + 46 = 85, ∴ 16 + 83 = 99.