1 votes 1 votes Let P denote the set of all positive integers and $S=\{(x,y) : x \in P$ and $x^2 – y^2 =666$. The number of distinct elements in the set $S$ is 0; 1; 2; more than two Quantitative Aptitude quantitative-aptitude + – . asked Jul 19, 2016 edited Sep 25, 2016 by go_editor . 1.1k views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes (x+y)(x-y)=666 Now 666 can be divided in 3X222, 111X6,2X333,22X33... now let the first case X+Y=222 x-y=3 now addin 2X=225 In every cases in eqaution 2X=ODD number so answer is 0.. Not sure if i am correct Aboveallplayer answered Aug 9, 2016 Aboveallplayer comment Share Follow See all 0 reply Please log in or register to add a comment.