It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Can you find out the number that should replace the question mark with a valid reason?

The Little ant seems to be always confused. Do you know why?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Can you find the key in the picture below?

What is harder to catch the faster you run?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?