If f and g are both one-one functions, then fog is $x$ (one-one/onto/bijective).
Answer (integer)
1
Solution
fog (f∘g) is one-one if f and g are one-one. If both are one-one, fog is also one-one. But fog may not be onto unless f is onto.
About this question
Subject: Mathematics · Chapter: Sets, Relations and Functions · Topic: Types of Functions
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