How many words can a pen with half refill write?

I shave every day, but my beard stays the same. What am I?

Can you solve below mathematical equation?

2^1234 - 2^1233

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

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?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Can you quickly find which two matchstick figures are identical?