# Missing Numbers Quiz Set 027

### Question 1

What is missing?

A

2013

B

2125

C

1516

D

1718

Soln.
Ans: c

1516. In the top circle, the progression is plus 1, minus 2 plus 3, minus 4 and so on. In the bottom circle, the progression is minus 1, plus 2, minus 3, plus 4 and so on.

### Question 2

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

4, 7, 13, 25, 49, 97, 153

A

25

B

49

C

97

D

153

Soln.
Ans: d

4 + 3 gives 7, 7 + (2 X 3) gives 13, 13 + (2 X 3 X 2) gives 25, 25 + (2 X 3 X 2 X 2) gives 49, 49 + (2 X 3 X 2 X 2 X 2) gives 97, but 97 + (2 X 3 X 2 X 2 X 2 X 2) is ≠ 153.

### Question 3

What is missing?

A

262.

B

622.

C

631.

D

824.

Soln.
Ans: b

915 - 364 = 551 and 789 - 543 = 246, similarly, 863 - 241 = 622.

### Question 4

7, 12, 19, (?), 39.

A

28.

B

26.

C

24.

D

29.

Soln.
Ans: a

7 (+5), 12 (+7), 19 (+9), 28 (+11), 39.

### Question 5

456, 546, 654, 654, 789, (?), 987.

A

978.

B

789.

C

897.

D

879.

Soln.
Ans: d

The three digits are being shuffled. 456 -> 546 -> 654, then 789 -> 879 -> 987