⛔ Right & Wrong ⛔

 क्या मैं अंदर आ सकता हूँ ।

✅ May I come in sir ?

Situation :- Highly Formal

Oficial work k liye use ho sakta hai.
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❌ Can I come in sir ?

Situation :- Highly Informal

Doston waigrah k liye use ho sakta hai .
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✅ Could I come in sir ?

Situation :- Formal and Informal.

Ye dono jagah use ho sakta hai.

Isliye behtar hai yahi use kariye.