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प्रश्न
Let A = {1, 2, 3, 4} and B = {a, b, c, d}. Give a function from A → B of the following:
neither one-to-one nor onto
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उत्तर
f = {(1, b), (2, c), (3, d), (4, d)}
f is a function, it not one to one and not onto.
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