if `x+y=10`, thent he maximum value of xy is

If x + y = 8, then the maximum value of xy is _______

If x + y = 60 , x > 0 , y > 0 , then the maximum value of xy^3 is

If x+y=4, then maximum value of xy is

If x+y=60, x, y gt 0 , then the maximum value of xy^(3) is-

The maximum value of xy when x+2y=8 is

The maximum value of xy when x+2y=8 is

If xgt0,ygt0,x+y=3 and xy is maximum then the maximum value of xy is

The feasible region of an LPP is shown in the figure. If Z=11x+7y , thent he maximum value of Z occurs at