If 21x = 79x, what is the value of x?

When is the top of a mountain similar to a savings account?

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

Jim has three close friends at his school: Michael, John and Alice. Two of them play football, two play basketball and two play hockey. The friend who does not play hockey does not play basketball as well. The friend who does not play football does not play hockey.

Can you identify which sport/s is played by which person?

Can you make four (4) nines (9) equal 100?

Can you name an animal whose killing cannot be performed without spilling your own blood?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

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?