If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

What is black when you buy it, red when you use it, and gray when you throw it away?

What do you see in the image below

What is the fastest way to double your money?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Find the missing letter in the last circle logically in the given below picture.

How can you make a TV, a bed, a dog, and a car liquid?