Riddle

Solution to Question 1: 

The Man on the Painting

A man is standing in front of a painting of a man, and he tells us the following:"Brothers and sisters have I none, but this man's father is my father's son". Who is on the painting?

The Solution: 

His son

An Explanation

We can replace "my father's son" by "myself" since he is the only child. Now remains: "This man's father is myself", so this man is his son.

Question 2: Drawer with Socks

It is dark in my bedroom and I want to get two socks of the same color from my drawer, which contains 24 red and 24 blue socks. How many socks do I have to take from the drawer to get at least two socks of the same color?

 2
 3
 24
 47
 48