Answer:
A. 10
Step-by-step explanation:
First put the numbers in order from least to greatest then find the two numbers in the center of that since there is an even number of numbers there will be two the add and divide by two and you get 10.
1,2,7,9,11,15,19,20
9+11=20
20/2=10
Complete Question
The complete question is on the first uploaded image
Answer:
The answers and the explanation are on the second ,third and fourth uploaded image
Step-by-step explanation:
Answer:
D is the correct answer
if you want explanation you can comment down