How many sides does a circle have?

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

Which point will the car reach to go out?

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?