اِسْمُ الْإِسْتِفْهَامِ

Noun of questioning

Genitive/ مَجْرُوْرٌAccusative/ مَنْصُوْبٌNominative/ مَرْفُوْعٌMeaningFixed/ مَبْنِيٌّ
     
What ?مَا
Who ?مَنْ
How ?كَيْفَ
أَيِّأَيَّأَيُّWhich ?أَيُّ
When ?مَتَى
Where ?أَيْنَ
How many ?كَمْ