Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?

Below rebus represent famous DiCaprio movie. Can you name it?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

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

Move three sticks of the spiral below to form a square.

What is the word or phrase below?
R | E | A | D

John was piloting a plane behind a car but was never able to overtake it. Why?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?

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