Let A = {ONGC, BHEL, SAIL, GAIL, IOCL} and R be a relation defined as ''two elements of A are
Channel: Doubtnut
Date: 24/05/2020

Let A = {ONGC, BHEL, SAIL, GAIL, IOCL} and R be a relation defined as ''two elements of A are related if they share exactly one letter''. The relation R, is