Hey,

The question on binary operations are very easy and it's rare for these questions to come in JEE mains.

It usually comes every two to three years as it's easy for students to approach these questions.

But you can't trust the pattern. So it will be really great if you  do that topic in case if the question comes from the topic so you will be able to solve it.

Hope that helps.

All thew best.

Thank you