Can you decipher the below rebus?

PBLUESAISNUERSES

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Can it be possible to build a house that has all its four walls facing towards the South?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

What always comes into a house through the keyhole?

What jumps when it walks and sits when it stands?

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C