Formal:
* आपका क्या कहना है? (Aapka kya kahna hai?) - This is a very polite and formal way to ask what someone's opinion is.
* आपके बारे में क्या? (Aapke baare mein kya?) - This is also a polite way to ask about someone's situation or opinion, but it is slightly less formal than the first option.
Informal:
* तुम्हारा क्या? (Tumhara kya?) - This is a casual and informal way to ask what someone's opinion or situation is. It's used among friends and family.
* तुम क्या कहती/कहते हो? (Tum kya kahti/kahte ho?) - This means "what do you say?" and is used in a similar way to "what about you?".
Other possibilities:
* और आप? (Aur aap?) - This is a simple and direct way to ask "what about you?".
* तुम्हारा क्या विचार है? (Tumhara kya vichar hai?) - This means "what is your opinion?".
The best way to choose the right Hindi phrase is to consider the situation and your relationship with the person you are talking to.