If A X B = {(1, a), (1, b), (1, c), (2, a), (2, b), (2, c)} then find set A.
(a) {1}
(b) {1, 2}
(c) {1, a}
(d) {a, b, c}
The question was posed to me in semester exam.
This interesting question is from Cartesian Product of Sets topic in portion Relations and Functions of Mathematics – Class 11