Good Riddles

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?

Question: Two men come before the king because one of their beloved pets has been claimed by the other. Both of these men claim that the same cow is theirs. The king declares that one of the men will get the cow and he will give the other man one of his cattle, just to be fair. He will decide which man gets which at random. One of the men thanks the king for his generosity but the other man does not accept the offer. One man leaves with the disputed cow.

Which man gets the cow?