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?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

What is so fragile that saying its name breaks it?

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

What Time Should the last watch show in the below figure?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Guess the hidden movie name?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?