"أقلام مَن هذه؟"

whom these pens ? , is this wrong ?j

صياغة السؤال خاطئة لمن هذه الأقلام؟

(Those ) it is used for plural things that far from the speaker whease we use ( these) for things also plural but near to the speaker.

أريد كورس مباشر خاص بالأسئلة..

What is the difference between those and these