" If "Q={x:x=(1)/(y)," where "y in N}." then "

If A = (x: x = (1)/(y), y in N ), where N is the set of natural numbers , then

Consider the equation (2)/(x)+(5)/(y)=(1)/(3) where x,y in N. Find the number of solutions of the equation.

If (x)/(y)+(y)/(x)=-1 , where x,y ne 0 then the value of (x^3-y^3) is

Let 'R' be the relation defined on the of natural numbers 'N' as , R={(x,y):x+y=6} ,where x, y in N then range of the relation R is

Number of un-order pair solution of (x,y) ofthe equation (1)/(x)+(1)/(y)=(1)/(2007), where x,y in N is

Let (x,y) be a pair of real number satisfying 56x+33y=-(y)/(x^(2)+y^(2)) and 33x-56y=(x)/(x^(2)+y^(2)) . If x/y=(p)/(q) (where p and q are relatively prime and pgtq ) then (6p-q) is

If x+y =k , where x, y epsilon N then xy is maximum when (x, y)-=..