Answer:
I am the kind of an ant that's good at math. What am I?
I'm as simple as a circle worthless as a leader; but when I follow a group their strength increases tenfold. By myself I'm practically nothing.
I let water fall on you while everyone else stays dry. What am I?
I am a box which holds keys but not locks. With the right combination, I may unlock your soul. What am I?
I start with āeā end with āeā. I have whole countries inside me. What am I?
I stay where I am when I go off. What am I?