Question

How many whole numbers are there in between 12 and 86?

Answer 1

Hint: We first try to explain the concept of whole numbers and its difference from integers. We use the formula of $ b-a-1 $ for two given integer numbers $ a $ and $ b $ where a is less than b, to find the number in between whole numbers.

Complete step-by-step answer:
The whole numbers are the part of the number system in which it includes all the positive integers from 0 to infinity. These numbers exist in the number line. They cannot be fractions or decimal.
All the natural numbers are whole numbers. All counting numbers are whole numbers. The properties of whole numbers are based on arithmetic operations such as addition, subtraction, division and multiplication.
To find the number of whole numbers in between two given integer numbers $ a $ and $ b $ where a is less than b, we would apply the formula of $ b-a-1 $ .
Therefore, to find the number of whole numbers in between 12 and 86, we get $ 86-12-1=73 $ .
So, the correct answer is “73”.

Note: We can also use the concept of number line to find the number of big dividers present between 12 and 86 to find the solution. Whole numbers start from 0 so all positive numbers are considered.