Question

could you please explain these and use examples?
*natural number
*whole numbers
*integers
*rational numbers
*irrational numbers
*real numbers

Answer 1

A natural number, which can also be called a counting number, is represented by the digits from 0, 1, 2, 3 ... through to infinity.

Whole Number: The numbers {0, 1, 2, 3, ...} etc.There is no fractional or decimal part. And no negatives. Example: 5, 49 and 980 are all whole numbers.

Integers: A number with no fractional part. Includes the counting numbers {1, 2, 3, ...}, zero {0}, and the negative of the counting numbers {-1, -2, -3, ...} You can write them down like this: {..., -3, -2, -1, 0, 1, 2, 3, ...} Examples of integers: -16, -3, 0, 1, 198

Answer 2

A rational number is a number that can be written as a simple fraction. Example 1.5 is a rational number because 1.5 = 3/2 (it can be written as a fraction)


An Irrational Number is a real number that cannot be written as a simple fraction. Irrational means not Rational

Real numbers: The type of number we normally use, such as 1, 15.82, -0.1, 3/4, etc. Positive or negative, large or small, whole numbers or decimal numbers are all Real Numbers.

Answer 3

okay so the number 5 would be: natural, whole, real, and an integer. ?

Answer 4

what would \[\sqrt{2}\] be then?