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

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

Can you find the dog hidden in a group of pandas?

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

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Move four matchsticks to the below square to form three squares?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?