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

JEE Main Mathematics question

Let and be a relation defined as "two elements of are related if they share exactly one letter". The relation is

Answer: (C)

Pairs sharing exactly one letter: ONGC–GAIL (G), BHEL–SAIL, BHEL–GAIL, BHEL–IOCL (L), in both orders.

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Question ID VK-003221