If the median and range of four numbers {x,y,2x+y,x−y}, where `0 lt y lt x lt 2y`, are 10 and 28 respectively, then the mean of the numbers is :

If the median and the range of four numbers {x,y,2x+y,x-y} ,Where 0ltyltxlt2y are 10 and 28 respectively, then the mean of the number

x + y lt 5

Let the mean and variance of four numbers 3, 7, x and y (x gt y) be 5 and 10 respectively. Then the mean of four numbers 3 + 2x, 7 + 2y, x + y and x - y is ___ _

If x lt y lt 2x , the median and the mean of x, y and 2x are 27 and 33 respectively, then find the mean of x and y.

If 0 lt x lt pi/2 and sec x = cosec y , then the value of sin (x + y) is

2x - y gt 1 , x - 2y lt 1