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

Why do you find that most of the buildings are deprived of the 13th floor?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

Which Travels Faster? Solve below famous picture riddle:

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Can you replace the question mark with the correct number in the below table sequence?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?