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| Natural numbers |
Natural numbers are those numbers by which we can count things in nature like 4 pens, 5 girls, 8 trees, etc.
These are the numbers used for counting purpose.
So, Natural numbers = 1, 2, 3, 4, 5, 6, 7, .....
Properties of natural numbers:
- The first and smallest natural number is 1(one).
- The last and greatest natural number can not be obtained, infact there are infinite numbers, like counting of stars in nature.
- The difference between any two consecutive natural numbers is obtained.
- The fractions like: 15/43, -34/51, etc. are not natural numbers.
- The decimal numbers like: 4.4, 2.36, 8.94,etc. are not natural numbers.
- 0 (zero) is not a natural numbers.
- No natural number is negative i.e. none of -2, -53, -712, etc. is a natural number.
- If n is any natural number, then 2n is even natural number and (2n-1) is an odd natural number.
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