This was purchased for civil servant exam preparation. The explanations are easy to understand, so it's recommended for beginners (￣^￣)ゞ It has been stored by a non-professional, so the front and back covers are creased, but there's no problem using it as a problem book! "Atsuko Hatanaka's Great Revolution in Numerical Reasoning" Atsuko Hatanaka / Tokyo Legal Mind LEC General Research Institute Price: ¥1500 #AtsukoHatanaka #Atsuko_Hatanaka #TokyoLegalMindLECGeneralResearchInstitute #book #society/general #CivilServantExam #NumericalReasoning