Please solve question 18, and 20(3rd)part

If f: A → B & G: B → A satisfy get - In then show that f is one one & g is onto.

Question

Please solve question 18, and 20(3rd)part

If f: A → B & G: B → A satisfy get - In then show
that f is one one & g is onto

Chandan chaurasiya · Accepted Answer

Dear student<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_5ce4660458582%20jpg">hope
you get it regards