Answer:
Your answer is 7
Step-by-step explanation:
First place the numbers in order from lest to greatest, then use your two index fingers to find the middle number from all the numbers, like this:
3, 5, 5, 6, 7, 8, 9, 12, 13
P.S. is the number "1" part of the numbers? Because if it is then you need to do the same thing of ordering the numbers and if there are two numbers in between, all you have to do is add & divide.
1, 3, 5, 5, 6, 7, 8, 9, 12, 13
6 + 7 = 13; 13/2 = 6.5
If that's the case, then your answer is 6.5.