Answer:
If you've got me I'm everywhere. If you share me I'm nowhere. What am I?
What goes up and down, but does not move?
I get wet when drying. I get dirty when wiping.
What loses its head in the morning but gets it back at night?
A prisoner is told 'If you tell a lie we will hang you if you tell the truth we will shoot you.' What can the prisoner say to save himself?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?