I am an odd number Take away a letter, and I become even What number am I?

I’m something you can copy perfectly, yet the original never disappears. I get smaller when you compress me, but smarter when you train me. I live in layers, travel in packets, and die when corrupted. People argue whether I should be free.

I sound like I'm a man who's been kissed by the sun. I'm featured in a subject many consider unfun. Our paths will not cross, but we'll meet at one. Oh by the way, do you like puns?

I am naught but a border, particularly for figures of geometry. circles adore, the rest general bore me, so unscramble this word for a jest.

When one door closes, I come knocking. Some people catch me, some people let me slip. I’m hard to find. I’m hard to make. I’m taken for granted when fear takes place.