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

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

Find the smallest sentence with all the English alphabet.

using four eights (8) and a one (1) and one mathematical symbol , create the number 100