Basic Operations
We are given the numbers 8 4 2 1 and we must combine them in that order to get 12.
The first two numbers 8 +4 add up to 12. Since that is already the required answer, we need to make 2 and 1 a factor such that it does not affect our sum.
It can be done by subtracting them and then multiplying or dividing by them.
Fist solution:
Second solution:
There can be other combinations like:
And also:
