Can you solve below mathematical equation?

2^1234 - 2^1233

The more of this there is, the less you see. What is it?

Why Aeroplane windows are round?

What has 13 hearts but no other organs?

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Can you count the number of triangles in the given picture?

Can you find out the missing number in the grid?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?