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Home  >>  CBSE XII  >>  Math  >>  Relations and Functions
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Which of the following is true? A function f : X → Y is invertible if and only if:

a) f is one-one, b) f is onto, c) f is one-one and onto, d) f is neither one-one nor onto.

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Answer: c) f is one-one and onto.

A function f : X → Y is invertible if and only if f is one-one and  onto.

answered Mar 12, 2013 by balaji.thirumalai
edited Jun 12, 2013 by balaji.thirumalai
 

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