#### Quantitative Aptitude Problems With Answers - Free Online Practice Test

- Quantitative Aptitude Problems With Answers All Chapters with multiple Examples
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**Formulas:-****0, 1, 2, 3, ----9. are called digits.****10, 11, 12,----- are called Number.****Natural number (N) :-**Counting numbers are called natural numbers.

Example:- 1, 2, 3,---etc. are all natural numbers. minimum natural number 1 and maximum natural

number ∞**Whole numbers (W) :-**All counting numbers together with zero from the set of whole numbers

Example:- 0, 1, 2, 3, 4, ------ are whole number.**Integers (Z) :-**All counting numbers, 0 and -ve of counting numbers are called integers.

Example:- -∞---------, -3, -2, -1, 0, 1, 2, 3, -------∞**Rational Numbers (Q) :-**A Rational Number is a real number that can be written as a simple fraction

Example:- {p/q/p,q∈Z}**Irrational NUmbers :-**An Irrational Number is a real number that cannot be written as a

simple fraction.

Example:- √**Even numbers :-**A number divisible by 2 is called an even number.

Example:- 0, 2, 4, 6, - - - - - - - - -**Odd numbers :-**A number not divisible by 2 is called an odd number.

Example:- 1, 3, 5, 7, - - - - - -**Composite Numbers :-**Numbers greater than 1 which are not prime, are called composite numbers.

Example:- 4, 6, 8, 9, 10, - - - -. 6 -> 1,2,3,6.**Prime Numbers:-**A number greater than 1 having exactly two factors, namely 1 and itself is called

a prime number.

Upto 100 prime numbers are:

**2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 71, 73, 79, 83, 89, 97****Co-prime Numbers:-**Two natural numbers a and b are said to be co-prime if their HCF is 1.

Example:- (21, 44), (4, 9), (2, 3), - - - - -**Twin prime numbers :-**A pair of prime numbers (as 3 and 5 or 11 and 13) differing by two are

called twin prime number.

Example:- The twin pair primes between 1 and 100 are

**(3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), (71, 73).****Face value:-**Face value is the actual value of the digit.

Example:- In the number 7635, the "7" has a face value of 7, the face value of 3 is 3 and so on**Place value:-**The value of where the digit is in the number, such as units, tens, hundreds, etc.

Example:- In 352, the place value of the 5 is "tens"

Place value of 2 * 1 = 2;

Place value of 5 * 10 = 50;

Place value of 3 * 100 = 300.

- 1. What is the place value of 7 in the numeral 2734?

A.) 70

B.) 7

C.) 700

D.) 7.00

Answer: Option 'C'

7 × 100 = 700

- 2. What is the place value of 3 in the numeral 3259

A.) 300

B.) 30

C.) 3

D.) 3000

Answer: Option 'D'

3 × 1000 = 3000

- 3. What is the diffference between the place value of 2 in the numeral 7229?

A.) 20

B.) 200

C.) 180

D.) 18

Answer: Option 'C'

200 - 20 = 180

- 4. What is the place value of 0 in the numeral 2074?

A.) 100

B.) 70

C.) 7.0

D.) 0

Answer: Option 'D'

Note : The place value of zero (0) is always 0. It may hold any place in a number,

its value is always 0.

- 5. What is the diffference between the place value and face value of 3 in the numeral 1375?

A.) 300

B.) 3

C.) 297

D.) 303

Answer: Option 'C'

place value of 3 = 3 × 100 = 300

face value of 3 = 3

300 - 3 = 297

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**To whom this Number System Question and Answers section is beneficial?**

Students can learn and improve on their skillset for using Number System effectively and can also prepare for competitive examinations like...

- All I.B.P.S and Public Sector Bank Competitive Exam
- Common Aptitude Test (CAT) Exams
- UPSC Paper-II or CSAT Exams
- SSC Competitive Exams
- Defence Competitive Exams
- NIIT online mock test
- L.I.C Assistant Administrative Officer (AAO)/ G.I.C AAO and Clerk Competitive Exams
- Railway Competitive Exam
- University Grants Commission (UGC)
- Career Aptitude Test (IT Companies) and etc.