Formal:
* Kung at kung tanging - This is the most literal translation and is suitable for formal writing or speeches.
* Tanging kung - This means "only if" and can be used in some contexts where "if and only if" is appropriate.
Informal:
* Kailangan lang kung - This means "only if" and is more conversational.
* Basta kung - This means "only if" and is very casual.
Example:
* Formal: "You will get a reward kung at kung tanging you pass the exam." (You will get a reward if and only if you pass the exam.)
* Informal: "Makakakuha ka ng premyo kailangan lang kung pumasa ka sa exam." (You will get a reward only if you pass the exam.)
It's important to note that the specific translation may vary depending on the context. If you can provide more context about the specific situation where you need to use this phrase, I can give you a more accurate and natural-sounding translation.