Question

how many natural numbers are there between 18 and 137

Answer 1

just substrate first from second

Answer 2

First of All, What are natural numbers?

Natural numbers are positive integers starting from 1 to ∞. For example, 1, 2, 3, 6, 8, 21, 66, 86432, 5678 - all are natural numbers.

So, the number of natural numbers between 18 and 137, including 137 may be calculated by subtracting the first number from the second, ie, 137 - 18, which equals to 119. Thus, the number of natural numbers between 18 and 137 excluding both of them is 119 - 1 = 118 natural numbers.

Thanks!