Replace the question mark with the correct number below.

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

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

There is a basket full of hats. Three are white and two are black. Three men, Tom, Tim, and Jim, each take a hat out of the basket and put it on their heads without seeing the hat they selected or the hats the other men selected. The men arrange themselves so Tom can see Tim and Jim’s hats, Tim can see Jim’s hat, and Jim can’t see anyone’s hat. Tom is asked what color his hat is and he says he doesn’t know. Tim is asked the same question, and he also doesn’t know. Finally, Jim is asked the question, and he does know. What colour is his hat?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Can you find the dog hidden in a group of pandas?

Count the number of triangles in the given picture.

A sundial has the fewest moving parts of any timepiece. Which has the most?

Can you name some countries which do not have the alphabet 'A' in them?