A single number cannot have a mean - other than itself. To calculate a mean, you need more than a single number.
Chat with our AI personalities
the mean is the average; (9 +8+4 + X)/4 = 8; solve for X ; (21 +X)/4 = 8; X = 11
Add them up and divide by 5 = 7.6
It could mean the base for the number: for example, 238 is 23 in base 8, 10012 is binary 1001 and so on.
7 times some other unknown number then add 8
If you mean: 1, 2, 4, 8 and 16 then the next number is 32