"Maaf, kalian salah."

Translation: Sorry, you are wrong.

[NugrohoE]

Welcome to Indonesian course in Duolingo. Have fun and enjoy learning here!

[tsuj1g1r1]

Makasih!

[Speedy12846]

''Sorry your wrong'' should be accepted too.

[Jellei]

Poor Mo Salah, must be hard for him in Indonesia.

[gringoton]

Great sentence! Best one so far.

[blakekimmj]

صلاح

[N_Hermawan]

"Kalian" means "you"? I thought it was used when you are referring to a group of people excluding yourself.

[AVAX3M]

"Kalian" means "you"?

Yes, "kalian" is the plural "you".

I thought it was used when you are referring to a group of people excluding yourself.

Are you talking about "kami"? It is used when a speaker excludes at least the listener.

[Billie631]

Nope, you're nitpicking and biased, i win, byeee

[AVAX3M]

I don't know how but you used the wrong formula and got the correct answer.

[AndrewPeak11]

"You guys" is an accepted an common way of indicating the second person plural in English, therefore, "Sorry, you guys are wrong" should be an accepted answer