Let the set C={(x,y)∣x2-2y=2023, x,y∈N}. Then ∑(x,y)∈C(x+y) is equal to ________ . [2024]
(46)
We have, x2-2y=2023⇒2y=x2-2023
∴ Possible values of (x,y) are (45,1)
So, ∑(x,y)∈C(x+y)=(45+1)=46