A collection (book) of past exam questions, used to study trends and prepare for entrance or qualification exams.
大学受験のために過去問題集を何冊か買った。
I bought several past exam question collections for the university entrance exams.
過去問題集を解いて出題傾向をつかもう。
Work through past papers to get a sense of the question trends.
先生は過去問題集から似た問題を出した。
The teacher gave a question similar to one from the past exam collection.