Answer:
A man went to the hardware store to buy items for his house. 1 would cost $.25. 12 would cost $.50. 122 would cost $.75. When he left the store he had spent $.75, what did he buy?
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
Neither bought nor sold but more valuable than gold. It is built but not by hand. What is it?
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
What force and strength cannot get through. I, with a gentle touch, can do. Many in the street would stand. Were I not a friend at hand.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?