On adding the two points P (4,2) and Q (10, 6) in the elliptic curve E11(1,1) we get
(a) (9,3)
(b) (6,4)
(c) (7,5)
(d) (2,8)
This question was posed to me during an online interview.
The doubt is from Elliptic Curve Arithmetic/Cryptography in portion Other Public Key Cryptosystems and Cryptographic Hash Functions of Cryptograph & Network Security