What does it mean?

Can you make a six-letter word using the letters N, A and B ?

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

What is the word or phrase below?
R | E | A | D

Which tank will fill first?

Can you name an animal whose killing cannot be performed without spilling your own blood?

How many times can you subtract the number two from the number fifty?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)