Answer key for math problems, part of the 4-Process series. The back cover had a name written on it, so it has been erased with a personal information protection stamp. - Title: 4-Process Mathematics II+B+C [Sequences, Statistical Inference, Vectors] Answer Edition - Publisher: Morikita Publishing - Series Name: 4-Process - Language: Japanese - Content: Answer key for math problems - ISBN: 978-4-7840-0472-8 Thank you for viewing.