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Given P = 2, ...

Question

Given P = {2, 4, 6, 81} and Q = {3, 7}. State,whether { (3, 2), (7, 6) } is a function (mapping) from Q to P or not.

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Solution

The given mapping from Q to P is a function because every single element of P gets a new unique value so this mapping goes into the function region.

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"In the expression

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