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Question
Multiple choice question :
Let A = {1, 2, 3, 4} and B = {4, 8, 9, 10}. A function f: A → B given by f = {(1, 4), (2, 8), (3, 9), (4, 10)} is a
Options
Many-one function
Identity function
One-to-one function
Into function
Solution
One-to-one function
Explanation;
Different elements of A have a different image in B.
∴ It is a one-to-one function.
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