Number Series Model Questions Set 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 11

A wrong number is given in the following number series. Find out that wrong number.

2, 11, 38, 197, 1172, 8227, 65806

a) 38

b) 1172

c) 11

d) 197

e) 8227

Answer: (b)

The series is based on the following pattern:

2 × 3 + 5 = 11

11 × 4 – 6 = 38

38 × 5 + 7 = 197

197 × 6 – 8 = 1174 ; not 1172

1174 × 7 + 9 = 8227

8227 × 8 – 10 = 65806

Clearly, 1172 is the wrong number and it should be replaced by 1174.

Question : 12

What should come in place of the question mark (?) in the following number series?

5, 5, 15, 75, ?, 4725, 51975

a) 450

b) 300

c) 520

d) 525

e) None of these

Answer: (d)

The series is as follows:

× 1, × 3, × 5, × 7, × 9, × 11

Hence, ? = 75 × 7 = 525

Question : 13

Only one number is wrong in the following number series. Find out the wrong number.

8, 27, 64, 125, 218, 343

a) 218

b) 343

c) 27

d) 125

e) None of these

Answer: (a)

The series is $(2)^3$, $(3)^3$, $(4)^3$, $(5)^3$, $(6)^3$, $(7)^3$,

The wrong number is 218

It should be $(6)^3$ = 216

Question : 14

A wrong number is given in the following number series. Find out that wrong number.

4, 2, 3.5, 7.5, 26.25, 118.125

a) 26.25

b) 2

c) 118.125

d) 3.5

e) 7.5

Answer: (d)

The series is based on the following pattern

4 × .5 = 2

2 × 1.5 = 3 ; not 3.5

3 × 2.5 = 7.5

7.5 × 3.5 = 26.25

26.25 × 4.5 = 118.125

Clearly, 3.5 should be replaced by 3.

Question : 15

What should come in place of the question mark (?) in the following number series?

2, 3, 10, 15, 26, ?, 55

a) 33

b) 35

c) 32

d) 34

e) None of these

Answer: (b)

The series exhibits the pattern of $n^2$ + 1, $n^2$ – 1,

alternatively, n taking values 1, 2.............1

IMPORTANT quantitative aptitude EXERCISES

Number Series Model Questions Set 1 Online Quiz

Click to Start..

Recently Added Subject & Categories For All Competitive Exams

100+ Quadratic Equation Questions Answers PDF for Bank

Quadratic Equation multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams

03-Jul-2024 by Careericons

Continue Reading »

IBPS Aptitude Linear Equations MCQ Questions Answers PDF

Linear equations multiple choice questions with detailed answers for IBPS RRB SO. more than 250 Attitude practice test exercises for all competitive exams

03-Jul-2024 by Careericons

Continue Reading »

New 100+ Compound Interest MCQ with Answers PDF for IBPS

Compound Interest verbal ability questions and answers solutions with PDF for IBPS RRB PO. Aptitude Objective MCQ Practice Exercises all competitive exams

02-Jul-2024 by Careericons

Continue Reading »

100+ Mixture and Alligation MCQ Questions PDF for IBPS

Most importantly Mixture and Alligation multiple choice questions and answers with PDF for IBPS RRB PO. Aptitude MCQ Practice Exercises all Bank Exams

02-Jul-2024 by Careericons

Continue Reading »