Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

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

What is always in front of you but can’t be seen?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Count the number of triangles in the below picture?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

What does Alexander the Great and Winnie the Pooh have in common?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?