Whole numbers start from 0 and increase by 1 each

They are 0, 1, 2, 3…

Number of whole numbers between 38 and 68 are-

39, 40, 41, …, 66, 67

i.e. no. of whole numbers = 67-39+1

= 29

*Important Note:

we find the number of numbers between two numbers 'a' and 'b'

(including b and a), by the formula (b - a + 1)