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.

Can you make a fire with just a single stick?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

What two things can you never eat for breakfast?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Which number comes next in the number series?

2, 9, 30, 93, ?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Can you count the number of triangles in the given figure?