Just when they were about to give up, a wise old engineer appeared, sensing their frustration. "Ah, young ones," he said with a knowing smile, "the solution manual you seek is not easily found. But I shall guide you on your quest."
Just when they were about to give up, a wise old engineer appeared, sensing their frustration. "Ah, young ones," he said with a knowing smile, "the solution manual you seek is not easily found. But I shall guide you on your quest."