Answer:
I am the kind of ant that's good at math.
I walk on 4 legs in the morning 2 legs at noon and 3 legs at night.
If you have me you want to share me. If you share me you don't have me. What am I?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
You throw away my outside you cook my inside. Then you eat my outside and you throw away my inside.
What never gets any wetter no matter how hard it rains?