Here is a list of six numbers written in order of size. 4 7 x 10 y y

The numbers have

a median of 9
a mean of 11

Find the value of x and the value of y.

x = 8

y1 = 17

y2= 20

Taking what we know, which is the median, and the mean.
The mean is the average of all the numbers added together then divided.
The Median is the middle number. This means we can easily solve what x equals.

knowing the middle point is 9. x has to be 8 so because there are 6 numbers, and no numbers in the middle of the positions 3-4.

Now we need to solve for both the final numbers, which in this has to come to an average of 11, and knowing the numbers are all ascending, we can at least come to the conclusion that the numbers are all < 10. Which leads us to the guessing part which is most likely not the best way to solve this, but is how I would solve it, and is just by plugin in numbers and solving. Which I found could be 17 and 20, as with both the median still is equal to 11.

~Neo