162
15 + 13 + 11 = 39
1+12=13+15=28+2=30+29=59.
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 = 210
10 7 11 12 9 13 14 11 15 16 13 17 18 15 19 20...
The answer is 142. Just add all of the numbers together and then you get the answer. Always check your work when you are done. You can use a calculator to do this.
3 + 11 + 11 + 11 + 12 + 13 + 15 + 15 + 16 + 17 + 19 = 143
15 + 13 + 11 = 39
13 - 15 - 1 + 11 = 8
The average mean is: (11+12+13+14+15)/5 = 13
13 + 21 - 7 + 12 = 15
1 is a common factor of 11, 12, 13, 14 and 15.
4/12 + 11/15 = 1 1/15
First put them in order:11, 12, 13, 15, 16, 26, 26.Then use your fingers the numbers at the opposite ends:11, 12, 13, 15, 16, 26, 26.Then keep moving in11, 12, 13, 15, 16, 26, 26.11, 12, 13, 15, 16, 26, 26.Until you come to the middle:11, 12, 13, 15, 16, 26, 26.So the median is 15.
13
1+12=13+15=28+2=30+29=59.
(13 + 15 + 26 + 11 + 26 + 16 + 12)/7 = 17 ====
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20 = 210