3. Now, take five integers, each time take two different numbers to add, you can get ten sums, then add the ten sums, the sum obtained is 2020, then the average of the original five numbers is $\qquad$ .
【Answer】101
【Analysis】There are 10 ways to choose two different numbers from 5 numbers. In these 10 ways, each number is chosen 4 times. Therefore, when adding up the ten sums mentioned in the problem, it is equivalent to adding each number 4 times.
The sum of the 5 integers is $2020 \div 4=505$, so the average of the 5 integers is: $505 \div 5=101$.