This is the "New Junior High School Problem Collection: Mathematics 2nd Year," a textbook only available at cram schools and the like. Includes answers and explanations. This copy is in excellent condition, unused and like new, with no writing. You are welcome to purchase this item immediately. Please consider that this is a used item that has been in someone's possession. Please refrain from asking questions about the product or requesting price reductions after purchase. We cannot accept cancellations, claims, returns, or refunds after purchase.