Answer:
What can you catch but not throw?
The more you take, the more you leave behind. What are they?
I have a head tail but no arms and legs.
I am an odd number. Take away a letter and I become even. What number am I?
The person who makes me doesn't need me. The person who buys me doesn't use me. The person who uses me doesn't know it. What am I?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?