What should be the 4th number in the data set 1,5,6 and x so that the mode is 6 and mean is 4.5?

What should be the 5th number in the data set 1,1,4,6 and x so that the mode is 1 and mean is 3?

What should be the 5th number in the data set 10,50,60,50 and x so that the mode is 50 and mean is 40?

What should be the 5th number in the data set 10,10,40,60 and x so that the mode is 10 and mean is 30?

What should be the 4th number in the data set 10,50,60 and x so that the mode is 60 and mean is 45?

What should be the 4th number in the data set 10,20,30 and x so that the mode is 20 and mean is 20?

What should be the 5th number in the data set 2,2,2,4 and x so that the mode is 2 and mean is 3?

What should be the 4th number in the data set 1, x+1, 4, and x so that the mode is 1 and mean is 2?

What should be the 5th number in the data set 1,5,6,5 and x so that the mode is 5 and mean is 4?

What should be the 4th number in the data set 2,3,4 and x so that the mode is 3 and mean is 3?