# Missing Numbers Quiz Set 006

### Question 1

6, 11, 21, 36, 56, (?)

A

51.

B

42.

C

81.

D

91.

Soln.
Ans: c

6 (+5), 11 (+10), 21 (+15), 36 (+20), 56 (+25), 81.

### Question 2

Which one set is most like the given set (21, 51, 15)?

A

(21, 51, 42)

B

(21, 35, 41)

C

(21, 91, 35)

D

(21, 30, 51)

Soln.
Ans: c

In the given set if first number is added to double of the third number the result is the middle number.

### Question 3

Directions: One number is missing in the series. You have to understand the pattern of the series and then insert the missing number.

2, ?, 8, 16, 32, 64, 128, 256

A

2

B

3

C

5

D

4

Soln.
Ans: d

Each number of the series is the double of the preceding number. Hence, the missing number will be 4 .

### Question 4

Two numbers of the following series have been put inside round brackets. Study the series and pick your answer from the four choices given below.

2, 3, (6), 11, 18, (30), 38

A

if the terms in both the brackets are right.

B

if the term in the first bracket is right but the term in the second bracket is wrong.

C

if the term in the first bracket is wrong but the term in the second bracket is right.

D

if the terms in both the brackets are wrong.

Soln.
Ans: b

The number in the 2nd bracket, 30 is wrong and should be replaced by 27 so that series moves with differences of odd natural numbers 1, 3, 5, 7, 9, 11.

### Question 5 What is missing?

A

5.

B

6.

C

11.

D

8.

Soln.
Ans: d

The terms on the bottom row are formed by taking half the product of those above it and subtracting 1. 