In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Count the number of balls in picture below:

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

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

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

I am quite hot but become too cold if you remove the first two letters. What am I?

Can you solve the maths in the below-given picture equation?

What Adam and Eve do not have but the rest of the people have?