وَخَبَرِيَّةٍ، وَمَا بَعْدَهَا مَجْرُورٌ مُفْرَدٌ، نَحْوُ: «كَمْ مَالٍ أَنْفَقْتَهُ»، أَوْ مَجْمُوعٌ، نَحْوُ: «كَمْ رِجَالٍ لَقِيتُهُمْ»، وَمَعْنَاهَا التَّكْثِيرُ.
Translation: The second use is declarative or exclamatory. Its tamyīz is genitive and may be singular (“How much wealth I spent!”) or plural (“How many men I met!”); it conveys abundance.
Declarative kam expresses many or much rather than asking for a count. Both «مَالٍ» and «رِجَالٍ» are genitive in the book’s examples. Do not classify every kam as a question.