Question

Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice? What do you think and why?

Answer 1

I've got the answer now

Answer 2

Ah, the famous Monty Hall problem.
If you google "Monty Hall problem" , you will get many explanations often in
Youtube form, clicking on one will lead to others.
Here is just one of them:
https://www.youtube.com/watch?v=UgKrQ2ywVfs