If A = {1, 3, 5, 7} , B = {2, 4, 6, 8, 10} and let R = {(1,8), (3,6), (5,2), (1,4)} be a relation from A to B. Then,
Domain (R) = ?

{1, 3, 5}

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{8, 6, 2, 4}

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{1, 2, 3, 4}

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None of these

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Solution

The correct option is A ${1, 3, 5}$
The set of all first components or coordinates of the ordered pairs belonging to $R$ is called the domain of $R .$
Thus, Domain $(R) = {1, 3, 5}$

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