Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Prove that twice of ten is the same as twice of eleven.

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

Using eight eights and addition only, can you make 1000?

They are three errirs in this question. Can you find them?

What month of the year has 28 days?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?