"Minna ga Hoshikatta! Denken Sanshu Riron no Kyokasho & Mondai-shu" (Everyone Wanted It! Textbook & Problem Book for Third Class Electrician Examination: Theory) TAC Publishing Development Group Price: ¥3000 The textbook and problem book are separated from the main body. There are writings on the problem book as shown in the second photo (of the listing).