Good Riddles

Question: There are 11 bananas and you take 4, how many do you have?

Question: A dad and his four boys stand in line.
All crowned, they toil in darkness.
Another family they see, two birds of a feather.
All of them together clad in leather.

What are they?

Question: Two simple warriors: a vegetable and none. It depends on whether they work together to reduce infinity to one.

Question: Why are owls like a quiz?

Question: My eye is dark,
and my mane is yellow.
You man see me at the mart,
and I'm probably taller than you fellow.

What am I?