Logical Reasoning

Number Series - Type 4

Logical Reasoning Exercise Mode

Number Series - Type 4

Practice and master this topic with our carefully crafted questions.

10 Questions
15 Minutes
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QUEST ? !
Directions to Solve

Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters

Question 1
Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?

A
85
B
97
C
109
D
178
Correct Answer: Option D

This is an alternating division and addition series: First, divide by 2, and then add 8.

Question 2
Look at this series: 8, 43, 11, 41, __, 39, 17, ... What number should fill in the blank?

A
8
B
14
C
43
D
44
Correct Answer: Option B

This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and subtracts 2.

Question 3
Look at this series: J14, L16, __, P20, R22, ... What number should fill the blank?

A
S24
B
N18
C
M18
D
T24
Correct Answer: Option B

In this series, the letters progress by 2, and the numbers increase by 2.

Question 4
Look at this series: U32, V29, __, X23, Y20, ... What number should fill the blank?

A
W26
B
W17
C
Z17
D
Z26
Correct Answer: Option A

In this series, the letters progress by 1; the numbers decrease by 3.

Question 5
Look at this series: 4, 7, 25, 10, __, 20, 16, 19, ... What number should fill the blank?

A
13
B
15
C
20
D
28
Correct Answer: Option A

Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.

Question 6
Look at this series: F2, __, D8, C16, B32, ... What number should fill the blank?

A
A16
B
G4
C
E4
D
E3
Correct Answer: Option C

The letters decrease by 1; the numbers are multiplied by 2.

Question 7
Look at this series: V, VIII, XI, XIV, __, XX, ... What number should fill the blank?

A
IX
B
XXIII
C
XV
D
XVII
Correct Answer: Option D

This is a simple addition series; each number is 3 more than the previous number.

Question 8
Look at this series: XXIV, XX, __, XII, VIII, ... What number should fill the blank?

A
XXII
B
XIII
C
XVI
D
IV
Correct Answer: Option C

This is a simple subtraction series; each number is 4 less than the previous number.

Question 9
Look at this series: 0.15, 0.3, ____, 1.2, 2.4, ... What number should fill the blank?

A
4.8
B
0.006
C
0.6
D
0.9
Correct Answer: Option C

This is a simple multiplication series. Each number is 2 times greater than the previous number.

Question 10
Look at this series: VI, 10, V, 11, __, 12, III, ... What number should fill the blank?

A
II
B
IV
C
IX
D
14
Correct Answer: Option B

This is an alternating addition and subtraction series. Roman numbers alternate with Arabic numbers. In the Roman numeral pattern, each number decreases by 1. In the Arabic numeral pattern, each number increases by 1.

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