"Wir brauchen ihn."

Translation: We need him.

[Prettiestfingerz]

Ihn = him? How have I missed that thus far?

[mizinamo]

ihn = him, yes.

(But not always the other way around, as ihm can also be "him".)

[Duolessio]

"We need it" was not accepted, but in my opinion ihn could also be a "it" if it's masculine in German.

[az_p]

True, for example:
Du hast den Schraubenzieher. Wir brauchen ihn = "You have the screwdriver. We need it".

However, file this under 'practical real-word tips' and don't expect it to be accepted on Duolingo unless the context clearly indicates you're talking about an inanimate object or animal.

[Fred402005]

how is we want him a wrong answer?

[mizinamo]

Because, as parents worldwide try to teach their children, wanting something is not the same as needing it.

"Mummy, I need a new pencil case! -- No, darling, you want a new pencil case. You don't need one: your old one is still perfectly good."

brauchen is to need.

[polyvios85]

Why is it ''him''? Is not it Dative? How can I say ''I need her''?

[mizinamo]

Why is it ''him''? Is not it Dative?

That's right -- it is not dative, but rather accusative. brauchen is a regular transitive verb and takes a direct object in the accusative case.

How can I say ''I need her''?

Ich brauche sie.