We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What number divided by 4 is the same as that number minus 4?

What has 88 keys?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Andrew sees a very rare bird named "Ruppell's vulture". Soon Andrew was dead. Can you explain the mystery, Mr. Sherlock?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?