What does this rebus riddle means ?

Look at the picture and find out which square is not linked with any of the other squares.

Why is a river so rich ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Which alphabet letter is a question?

An ant is travelling on a 1-meter-long rope at 1 cm/second but also the entire rope is being stretched by an extra 1 meter/second. Is it possible for the ant to reach at the end of the rope?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

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?