What is the coolest letter in the alphabet?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

A blonde put eyeliner on her head. Why?

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

Buy me, smell me or deliver me, I do not change.

Who am I?

Which alphabet is a part of our body?

Who always enjoys poor health?

What does the below mathematical rebus mean?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

What is 3/7 chicken, 2/3 cat and 2/4 goat?