Why Aeroplane windows are round?

Can you find out the missing number in the grid?

Can you solve the below geography rebus by decoding the below rebus ?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

At the local model boat club, four friends were talking about their boats.

There were a total of eight boats, two in each colour, red, green, blue and yellow. Each friend owned two boats. No friend had two boats of the same colour.

Alan didn't have a yellow boat. Brian didn't have a red boat but did have a green one. One of the friends had a yellow boat and a blue boat and another friend had a green boat and a blue boat. Charles had a yellow boat. Darren had a blue boat, but didn't have a green one.

Can you work out which friend had which coloured boats?

Next Number in the Series,

5, 16, 49, 104, ?

How many letters are in the alphabet?

Which is the smallest number that you can write using all the vowels exactly once?

Find the Goldfish below the given Image.

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?