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

Different lights make me strange by changing me into different sizes. What am I?

What always comes into a house through the keyhole?

What Adam and Eve do not have but the rest of the people have?

Why do people go to bed?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

A devotee visits 9 temples when he visits India. All these nine temples have one thing in common - there are 100 steps in every temple. The devotee puts the Re.1 coin after climbing up every step. He does the same while climbing down every step. At each temple, the devotee offers half of his money from his pocket to god. In this way, his pocket becomes empty after he visits the 9th temple.

Can you calculate the total amount he had initially?