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An injection is a function which is?

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An injection is a function which is?

(a) many-one

(b) one-one

(c) onto

(d) none of the mentioned

The question was posed to me during an online exam.

The query is from Number of Functions in portion Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

1 Answer

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Best answer
The correct choice is (b) one-one

Best explanation: One-One functions are also known as injection.

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