I’m tall when I’m young, and I’m short when I’m old. What am I?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

What jumps when it walks and sits when it stands?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

What does this Rebus Picture means ?

Remove two matchsticks to make the below equation correct.

How can a man go eight days without sleep?

Can you spot the man between the coffee bean in the picture below ?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?