using four different digits, what is the least sum you can add two 2-digit number?
13 + 24 = 37
To find the least sum of two 2-digit numbers using four different digits, we need to think about the possible combinations that would result in the lowest sum.
Let's start with the smallest 2-digit number, which is 10. We cannot use 0 as one of the digits since it would result in a 1-digit number.
Next, we need to consider the remaining three digits we can use. Since we want to use four different digits, we cannot repeat any of the digits. So, we have digits 1, 2, 3, and 4 available.
To find the least sum, we need to pick the two smallest available digits. The smallest two available digits are 1 and 2.
Now, we can form the two 2-digit numbers using these digits:
Number 1: 10 (smallest 2-digit number)
Number 2: 12 (next smallest available digits)
To find the least sum, we add these two numbers together: 10 + 12 = 22.
Therefore, the least sum we can get by adding two 2-digit numbers using four different digits is 22.