How many times does 9 occur between 1 to 100?

By BYJU'S Exam Prep

Updated on: September 25th, 2023

There is a total of 20 nines between 1-100. I’ll demonstrate how.

1 – 9
2- 19
3 – 29
4 -39
5 -49
6 -59
7 – 69
8 – 79
9 – 89
10 – 90
11 – 91
12 – 92
13 – 93
14 – 94
15 – 95
16 – 96
17 – 97
18 – 98
19 and
20 – 99

Table of content

1. How many times does 9 occur between 1 to 100?

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 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.

Summary: