## Problems on Numbers

This is the aptitude questions and answers section on Problems on Numbers with explanations for various interview, competitive examinations and entrance tests. There are different type of questions asked from numbers which you can practice for your exam. Following is the general detail of numbers which you can use and keep in mind for your reference.

Types of numbers-

- Natural numbers
- Counting numbers 1, 2, 3, 4, 5…. Are called as natural numbers
- Whole numbers
- All counting numbers together with zero form the set of whole numbers

Thus,

- 0 is the only whole number which is not a natural number
- Every natural number is a whole number

Integers

- All natural numbers, 0 and negatives of counting numbers together forms the set of integers
- Positive integers – 1, 2, 3, 4 ….. is the set of all positive integers
- Negative integers – -1, -2, -3, -4 . . . . is the set of all negative integers
- Non positive and Non negative integers – 0 is neither positive nor negative

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Even numbers

- A number divisible by 2 is called as an even number. Example 2, 4, 6, 8 etc

Odd numbers

- A number which is not divisible by 2 is called an odd number. Example 1, 3, 5, 7, 9 etc

Prime numbers

- A number greater than 1 is called a prime number, if it has exactly two factors, namely 1 and the number itself.

This topic problem on numbers covers the sums on all these topics individually. It includes more number of problems on all these type of numbers. This is an important concept in Aptitude section for any competitive exam. So, you should practice all the questions given here. Also, follow simple tricks to solve them and make sure you are trained in a manner that you can solve questions faster in exam.

### Problem On Numbers Tricks & Tips

The candidates of all competitive exam need to ensure that they study well and follow some simple tips for the exam. If you score well in exam, then you can have the great career ahead and you will be very close to your aims of life.

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