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

Can you decipher the two rows to find the hidden word?

Who can jump higher than a Mountain?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

Replace the question mark in the picture below.

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?