Verified Solution • 2025–26 Session
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QJEEM21Ma5242: JEE Main 2021 Mathematics - Class 11 JEEM21Ma5242 Solution: Consider function f : A B and g : B C (A, B, C R) such that…
Consider function f : A B and g : B C (A, B, C R) such that (gof) 1 exists, then :
Multiple Choice Options
- A f and g both are one-one
- B f and g both are onto
- C f is one-one and g is onto
- D f is onto and g is one-one
Step-by-Step Verified Solution
(gof) 1 exist gof is bijective
'f' must be one-one and 'g' must be ONTO.
'f' must be one-one and 'g' must be ONTO.