Answer:
What has a head but never weeps a bed but never sleeps can run but never walks and banks but no money?
I cannot be bought cannot be sold even if Iām sometimes made of gold.
How many letters are there in the English alphabet?
What invention lets you look right through a wall?
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate, yet I have my own style of music. What am I?
No matter how little or how much you use me, you change me every month.