If x and y are integers and `(x - 8) (x-10)= 2^y`, the number of solution of the pairs `(x.y)` is (A) 1 (B) 2 (C) 0 (D) 4

If x,y in (0,30) such that [x/3]+[(3pi)/2]+[y/2]+[(3pi)/4]=11/6x+5/4 y (where {x} denotes greatest integer <=x ) number of ordered pairs (x, y) is (A) 0 (B) 2 (C) 4 (D) none of these

If x,y in (0,30) such that [x/3]+[(3pi)/2]+[y/2]+[(3pi)/4]=11/6x+5/4 y (where {x} denotes greatest integer <=x ) number of ordered pairs (x, y) is (A) 0 (B) 2 (C) 4 (D) none of these

If y=0 then the number of values of the pair (x, y) such that x+y+x/y=1/2 and (x+y)x/y= -1/2 is:

If both x and y are integers, how many solutions are there of the equation (x-8)(x-10) = 2y ?

Find the number of solutions of the following pair of linear equations. x+2y=8, 2x+4y=16

Find the number of pairs of integer (x , y) that satisfy the following two equations: {cos(x y)=x and tan(x y)=y (a) 1 (b) 2 (c) 4 (d) 6

Find the number of pairs of integer (x , y) that satisfy the following two equations: {cos(x y)=x and tan(x y)=y (a) 1 (b) 2 (c) 4 (d) 6

Find the number of pairs of integer (x , y) that satisfy the following two equations: {cos(x y)=x and tan(x y)=y (a) 1 (b) 2 (c) 4 (d) 6

x=2, y=−1 is a solution of the linear equation (a) x+2y=0 (b) x+2y=4 (c) 2x+y=0 (d) 2x+y=5