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

Can you find out which number multiplied by itself will give the output as 12345678987654321?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

How many sides does a circle have?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Where do you go to learn how to make ice cream?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?