Yrr koi batao ki yeh s. t u p I d. . sa integers kya hota hai ?
[pure Saal book khola Nahi or ab tention ho ri hai]
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Answers
Whole Numbers
Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, ... (and so on)
number line whole
No Fractions!
Examples: 0, 7, 212 and 1023 are all whole numbers
(But numbers like ½, 1.1 and 3.5 are not whole numbers.)
Counting Numbers
Counting Numbers are Whole Numbers, but without the zero. Because you can't "count" zero.
number line whole
So they are 1, 2, 3, 4, 5, ... (and so on).
Natural Numbers
"Natural Numbers" can mean either "Counting Numbers" {1, 2, 3, ...}, or "Whole Numbers" {0, 1, 2, 3, ...}, depending on the subject.
Integers
Integers are like whole numbers, but they also include negative numbers ... but still no fractions allowed!
number line -10 to 10
So, integers can be negative {−1, −2,−3, −4, ... }, positive {1, 2, 3, 4, ... }, or zero {0}
We can put that all together like this:
Integers = { ..., −4, −3, −2, −1, 0, 1, 2, 3, 4, ... }
Examples: −16, −3, 0, 1 and 198 are all integers.
(But numbers like ½, 1.1 and 3.5 are not integers)
These are all integers , and they continue left and right infinitely:
And some people say that zero is NOT a whole number. So there you go, not everyone agrees on a simple thing!