Find the next number in the sequence

5 12 24 36 ?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Which Burger Is Different in below image?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

What is the centre of gravity?

If a wheel has 54 spokes, how many spaces are there between the spokes?

What word begins and ends with an E, but has only one letter?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?