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?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

I am white when I am dirty, and black when I am clean. What am I?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

Complete the table series riddle by finding the number that can replace "??".

What can you see in the middle of March and April that you can never see in any other month?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Can you count the number of triangles in the given picture?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

Can you decipher the two rows to find the hidden word?