Answer:
I am the kind of an ant that's good at math. What am I?
Feed me and I live. Give me water and I die. What am I?
What is it that makes tears without sorrow. And takes its journey to heaven?
What is easy to get into but hard to get out of?
What can run but never walks licks but never talks has a bed but never sleeps has a mouth but never eats?
No matter how little or how much you use me, you change me every month.