The number of ordered pairs (x, y) where `x in R,y in R`, satisfying equations `x^3+y^3=7` and `x^2+y^2+x+y+xy=4` is equal to

The number of pairs (x, y) where x,y are integers satisfying the equation 21x + 48y = 5 is

The number of ordered pairs of integers (x,y) satisfying the equation x ^2+6x+y^2 =4 is

The number of all possible ordered pairs (x,y) where x,y in I, satisfying both the equations hat sim(x^(2)+1)(y^(2)+1)=10 and (x+y)(xy-1)=3

The number of integral pairs (x, y) satisfying the equation 2x^(2)-3xy-2y^(2)=7 is :

The number of ordered pairs (x, y) of real number satisfying 4x^2 - 4x + 2 = sin^2 y and x^2 + y^2 <= 3 equal to

The number of ordered pairs (x, y) of real number satisfying 4x^2 - 4x + 2 = sin^2 y and x^2 + y^2 <= 3 equal to

The number of ordered pairs (x,y) , where x , y in N for which 4 , x , y are in H.P. , is equal to

The number of ordered pairs (x,y) , where x , y in N for which 4 , x , y are in H.P. , is equal to