By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

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

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

I taste better than I can smell. Who am I?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?