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

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

Identify the hidden meaning behind this picture?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

Can you identify if it's a murder or a suicide ?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

How could a baby fall out of a twenty-story building onto the ground and live?

Which of the eight images will fill the missing image in the puzzle below?