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exercise, prediction Ujian Nasional, UN for SMA 2009, Mathematics it consists of soal and answers (soal dan Jawaban), so it make you more easy when study it, although the Ujian Nasional or UN for SMA will held in this month, i think this soal and prediction still good to be collect.more you learn and practice the "soal" more you will ready for Ujian Nasional.download directly those document from