Inclusive - Including the last number
Exclusive - Excluding the last number
In Computer Science, inclusive/exclusive apply to a number range
Example
inclusive
If a function will compute $2^i$ where $i = 1, 2, …, n$.
$i$ can have values from 1 up to and including the value n.
We says, n is Included in Inclusive
1 through 10 (inclusive) = [1, 10]
1 2 3 4 5 6 7 8 9 10
exclusive
If a function will compute $2^i$ where i = 1, 2, ..., n
i can have values from 1 up to and including the value n-1. Which means
i can have values from 1 up to and excluding the value n.
We says, n is excluded in exclusive.
1 through 10 (exclusive) = [1, 10)
1 2 3 4 5 6 7 8 9