Riddle: My last five letters refer to a raised line on the surface of something; my whole refer to a thin tube containing ink inside a pen. My first three & four letters both refer to vehicles. I am a word of nine letters. What Word am I?
Riddle: I'm an object; good at drawing. I draws without using any drawing instrument, yet I can draw even better and faster than the world's best artist. But what I will draw won't stay permanent and what I draws may see me or not. What am I?
Answer: A mirror. Humans can see it but objects cannot.
Riddle: I am a word. My first four letters refer to a mark on a person's skin; three letters found in the middle refer to what all mathematics students know. My last four letters refer to a place where everyone love to be, and my whole is familiar to all economics students. I am an eight letter word. What am I?