BODMAS and types of number

BODMAS Rule

BODMAS stands for Brackets, Orders (i.e., Powers and Square Roots, etc.), Division and Multiplication (from left to right), Addition and Subtraction (from left to right).
This rule dictates the order in which operations should be carried out to solve an expression.
Brackets always come first in this hierarchy. Compute everything inside brackets first.
Orders or indices come next: any calculations involving powers or square roots are done at this stage.
Division and Multiplication come next and are equal in the hierarchy. These operations are performed from left to right.
Finally, Addition and Subtraction are also equal in hierarchy. These operations are performed from left to right.

Types of Number

Prime Numbers

A prime number is any number that has only two distinct natural number divisors: 1 and itself.
Examples are 2, 3, 5, 7, 11, 13. Note, 1 is not a prime number.

Composite Numbers

A composite number is any number that is greater than one and is not a prime number.
In other words, a composite number has more than two distinct natural number divisors.
Examples include 4, 6, 8, 9, 10.

Rational Numbers

A rational number can be expressed as the quotient or fraction of two integers, where the denominator is not zero.
Examples are -7, 0, 1/2, -4/9.

Irrational Numbers

An irrational number cannot be expressed as a fraction or quotient of two integers. Their decimal expansion is non-repeating and non-terminating.
Notable examples include the square root of 2 and π.

Real Numbers

Real numbers include all the counting numbers, fractions, terminating and recurring decimals, and irrational numbers.
In other words, if a number is either rational or irrational, it is a real number.

Square Numbers and Cube Numbers

A square number is the result when a number has been multiplied by itself, while a cube number is a number multiplied by itself twice.
For instance, 4 (2x2) and 9 (3x3) are examples of square numbers, while 8 (2x2x2) and 27 (3x3x3) are examples of cube numbers