Who can jump higher than a Mountain?

What do you see in the image below

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

What has 13 hearts but no other organs?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

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

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?