Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

What do you answer even though it never asks you questions?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

What type of tree can I carry in my hand?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Before Mount Everest was discovered, what was the highest mountain in the world?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?