A group of two or more numbers has a 'mean'. A single number doesn't.
If you absolutely must have the mean of a single number, it's that number itself.
you mean 18+5 right? if so it is 23. your welcome.
To find the mean you add all of the numbers that are there and divide your answer by how many numbers there are. Example: Find the mean of 4, 5, and 9 . 4 + 5 + 9 = 18 18/3 = 6 6 is the mean of 4, 5, and 9.
If you mean: 10/18 then it is 5/9 in its lowest terms
5 ninths of 18 is 10, so 18 - 10 = 8 liters. Or, if you mean 5 ninths of a litre, the answer is 17 and 4 ninths litres.
If you mean: 10/36 then it is 5/18
If you mean: -8-5+31 then it is 18 when simplified
2 + 5 + 11 = 18 The mean is the same as the average, which is the sum of the numbers divided by the total number of numbers that were added, in this case three. So the mean is 18/3 = 6.
__6_ 2+5+11=18 3/ 18 Your answer is 6
2+5+9+12+18+18+20=8484 divided by 7 (the amount of numbers you added) equals 12so your answer is 12.
If you mean 5/9 then they are 10/18 and 15/27
If you mean: 8*(6-5)+10 then it equals 18
If that is a single number 12465 it's mean is 12465.If that's supposed to be 5 numbers {1 2 4 6 5}, their mean is (1 + 2 + 4 + 6 + 5) ÷ 5 = 18 ÷ 5 = 33/5 = 3.6