Types of Numbers
Natural Numbers: Positive integers from 1 to infinity are known as natural numbers, also referred to as counting numbers. The collection of natural numbers is referred to as "N," and its members are N = 1, 2, 3, 4, 5,.
Whole Numbers: Whole numbers do not contain any fractional or decimal portions and are known as non-negative integers. It is represented by the symbol "W," and the set of whole numbers contains W = 0–1, 2–3, 4–5,..........
Integers: An integer is any whole number, but it also includes a set of negative natural numbers. The set of integers represented by "Z" is Z = -3, -2, -1, 0, 1, 2, 3
Complex Numbers (C): A complex number is one that can be expressed as a+bi, where a and b are real numbers and I is an imaginary number.
Irrational Numbers: The symbol "P" stands for an irrational number, which is a number that cannot be described as a ratio of one over another.
Imaginary Numbers: The complex numbers that may be expressed as the product of a real number and a fictitious unit I are known as imaginary numbers.
How many times does 9 occur between 1 to 100?
9 occurs 20 times between 1-100. In mathematics, multiplication is a method of finding the product of two or more numbers. The multiplication of numbers say, ‘a’ and ‘b’, is stated as ‘a’ multiplied by ‘b’.