Answer:
You can see me when two prisons throw light from one side and other side but odd number?
How do you make the number one disappear by adding to it?
I have two coins, one is marked George I and one is marked George IV. One is genuine but one is a forgery. Which is the forgery?
What goes up the hill and down the hill, And spite of all, yet stand still?
How do you blink twice without blinking twice?
I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.