I am white when I am dirty, and black when I am clean. What am I?

As shown in the picture below, we can see a boy hanging on the tree branch to save his life. There are various ways in which he can die like1. A snake hanging toward the right waiting to bite the boy.2. A roaring Lion near the tree.3. Two crocodiles are ready to attack if the boy reaches near water. The tree is chopped to some extent, so can fall as if he moves a lot. Can you give this boy an escape plan?

Can you make a fire with just a single stick?

Which English verb becomes past tense just by rearranging the letters?

You can see three almost identical images below. Can you spot the odd one out from them?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

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