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

A man died and leaves Rs.10,000 in his will. There are 6 beneficiaries- his 3 sons and their wives. The 3 wives receive Rs.3960 of which Priyanka gets Rs.100 more than Tanu and Neha gets Rs.100 more than Priyanka.
Pramod gets twice as much as his wife, Tushar gets the same as his wife, and Prashant gets 50% more than his wife.

Who is married to whom?

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?

How can you take 2 from 5 and leave 4?

If you say my name, I will no longer exist. What am I?

Can you solve the below geography rebus by decoding the below rebus ?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?