Why did the Girl throw the butter out of the window?

In the four images below, can you find the odd one out?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

I have branches, but no fruit, trunk or leaves. What am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Decode this picture on T-Shirt and tell what it says ?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

If a wheel has 54 spokes, how many spaces are there between the spokes?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

After a heavy Thanksgiving meal, the night watchman went to work. In the morning, he told his boss he had dreamed that a saboteur planted a bomb in the factory and that he felt it was a warning. The boss promptly fired him. Worker confused, Why boss fire him?