# Missing Numbers Quiz Set 006

### Question 1

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

2, 3, 6, 15, 37.5, 157.5, 630

A

3

B

6

C

15

D

37.5

Soln.
Ans: d

Number 37.5 is wrong and should be replaced by 45. The series is (2 X 3)/2 = 3, then (3 X 4)/2 = 6, then (6 X 5)/2 = 15, then (15 X 6) / 2 gives 45, not 37.5.

### Question 2

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

2, 6, 24, 96, 285, 568, 567

A

6

B

24

C

96

D

285

Soln.
Ans: b

Number 24 is wrong and should be replaced by 25. The series should be 2 X 6 - 6 = 6, then 6 X 5 - 5 = 25, 25 X 4 - 4 = 96, then 96 X 3 - 3 = 285, then 285 X 2 - 2 = 568, then 568 X 1 - 1 = 567.

### Question 3

8, 10, 14, 18, (?), 34, 50, 66.

A

25.

B

27.

C

24.

D

26.

Soln.
Ans: d

The alternate digits follow the same pattern. I have shown the first, third, fifth and seventh digits.

### Question 4

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

4, 10, 22, 40, 84, 94, 130

A

22

B

40

C

64

D

84

Soln.
Ans: d

Number 84 is wrong and should be replaced by 64. The series is 4 + 6 = 10, then 10 + 2 X 6 = 22, then 22 + 3 X 6 = 40, then 40 + 4 X 6 should give 64, not 84.

### Question 5

11, 12, 17, 18, 23, 24, (?)

A

30.

B

35.

C

29.

D

12.

Soln.
Ans: c

11 ( + 1), 12 ( + 5), 17 ( + 1), 18 ( + 5), 23 ( + 1), 24 ( + 5), 29.