"Are they different?"
Translation:Sont-ils différents ?
It may happen sometimes that because sentences are rotated, you may not see a word in its basic form.
However, "différent" is relatively transparent and if you have previously learned that adjectives agree in gender and number with the noun or pronoun they modify, you have also been exposed so far to a number of adjectives that take an ending -e for their feminine form and an ending -s for their plural form.
So, you might have guessed that "différent" means "different" and that the other forms are: différente (fem sing), différents (masc plur) and différentes (fem plur).
Maybe next time, you'll be luckier.