"Ini betul."

Translation: This is correct.

[evebergin1]

please advise the difference between betul and benar??

[CosmoDC]

I am still learning, so I could be wrong, but here is what I understand from searching through the internet:
Both mean "correct" (not wrong) and can be used interchangeably most of the time. The slight difference between these two --

Benar is true, real (not a lie, not fake).

Betul is right, exact (not a mistake, no error).

[stjy]

https://forum.duolingo.com/comment/28913850
https://forum.duolingo.com/comment/28946399

more explanations can also be found here!

[WillRobins645796]

I agree

[LawsonDaSi]

Are they interchangeable? Please let us know native speakers!

[MaxSieg]

benar vs betul? both are adjective? is it like right and correct? Like for example "the correct thing to do does not feel right"?