If ${(7, 11), (5, a)}$ represents a constant function, then the value of ' $a$ ' is :

7

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11

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5

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9

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Solution

The correct option is A $11$
Since we know that in constant function image of every element is same.
Here, image of 7 is 11, so image of any element will be 11.
Therefore, image of 5 is too 11.
Hence, $a = 11$

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