The textbook exercises require both the lexical meaning and the correct person/number category.
Word / formMeaning / explanation
مَسْمُوعُونَmasculine plural entities described as heard.
مَعْلُومَاتٌknown things; feminine plural (also the word for information).
مَتْرُوكَةٌone feminine entity left behind.
مَنْصُورَانِtwo men helped; masculine dual.
First identify the root-related passive meaning; then read the ending to determine gender and number.