It is: 13+9+11 = 33 and 33/3 = 11 which is the mean average
The average is (11+11+13+17)/4 = 52/4 = 13
Average: (13+9)/2 = 11
Add them together and divide by 6.
The LCM is 858.
It is 11 by adding them together and then dividing them by 6
11
The average is 13.
7 * 11 * 13 * 6 = 6,006
Average = (9+13)/2 = 22/2 = 11
13
It is (8+6+11+12+13)/5 = 10