If `x+y=8` , then the maximum value of `x y` is (a) 8 (b) 16 (c) 20 (d) 24

If x+y=8, then the maximum value of xy is (a)8(b)16(c)20(d)24

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

The maximum value of y=8-x^(2) is -

The maximum value of xy when x+ 2y =8 is : a)20 b)16 c)24 d)8

If log_(2)x+log_(2)y>=6, then the least value of x+y is 4 (b) 8 (d) 16 (d) 32

If 3x-4y+z=7; 2x-z+3y=19 ; x+2y+2z=24 , then what is the value of z ? (a) 4 (b) 5 (c) 6 (d) 8

If x^(4)+y^(4)=17 and x+y=1, then what is the value of x^(2)y^(2)-2xy?( a) 8 (b) 10(c)12 (d) 16

If x + y + z = 9 and both y a n d z are positive integers greater than zero, then the maximum value x can take is 3 (b) 7 (c) 8 (d) Date insufficient

If (log)_2x+(log)_2ygeq6, then the least value of x+y is 4 (b) 8 (d) 16 (d) 32

If (log)_2x+(log)_2ygeq6, then the least value of x+y is 4 (b) 8 (d) 16 (d) 32