JEE Main 25 July 2021 Shift 2 Solved Paper

Section: Mathematics

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Question : 74 of 90

Marks: +1, -0

Consider function f:A→B andg:B→C(A,B,C⊆R) such that (gof) ‌−1 exists, then:

[25 Jul 2021 Shift 2]

f and g both are one-one
f and g both are onto
f is one-one and g is onto
f is onto and g is one-one

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