Maths riddle, dont worry no counting, adding, multiplying, subtracting or divisi!


Question: Ok, so you are on a game show where you are given a choice of 3 doors. Behind one door you are told there is a brand new car, behind the other two however are rusty old garden tools.

You choose door number 2, the host locks in your answer, and, knowing what is behind each door himself he opens door number 1. As the door opens you see it is a rusty old shovel and a rake. So now there are two doors remaining; door number 2 which you selected and door number 3.

Now the host offers you the chance to change your selection to door number 3 before he reveals the location of the car.

The question is, "Are you better off staying with your choice of door number 2, changing to door number 3, or does it make no difference?"


Answers: Ok, so you are on a game show where you are given a choice of 3 doors. Behind one door you are told there is a brand new car, behind the other two however are rusty old garden tools.

You choose door number 2, the host locks in your answer, and, knowing what is behind each door himself he opens door number 1. As the door opens you see it is a rusty old shovel and a rake. So now there are two doors remaining; door number 2 which you selected and door number 3.

Now the host offers you the chance to change your selection to door number 3 before he reveals the location of the car.

The question is, "Are you better off staying with your choice of door number 2, changing to door number 3, or does it make no difference?"

You are better off switching to door number 3. Here's why. You have a 1 in 3 chance of getting the car when you first pick a door. When one door is removed you still have a 1 in 3 chance of getting the car if you stick with door number 2. But if you switch to door number 3, then you have a 2 in 3 chance of getting the car, because probability always has to equal 1. Get it?

No! Don't listen to other people. I'm right. Experiment with a deck of cards. First put three cards face down (one of the cards has to be the ace of spades). Make sure you don't know which card is which. First, pick out a card. Then have someone else remove a card that is not the ace of spades. Then switch to the other card, and I guarantee you it will the the ace of spades 2 out of 3 times. To make it even more clear, try using the 50 cards. Pick a card out of the deck that you think is the ace of spades, then have someone else remove 48 other cards that aren't the ace of spades. Switch to the other card. 49 out of 50 times it will be the ace of spades.

You're better off changing. I don't remember the exact explaination.

I would stay with my choice of door number 2!!!

Ima go 2 , if he knows it , he might be jealous and prevented my win on the 1st attempt

it makes no difference

i would stay with door number two.

It doesn't make a difference.

it makes no difference because

@ first it is a 1/3 chance because there are 3 options

now that there are only 2 options, it has to be divided equally because ther is no advantage to one side...thus, 1/2 chance of either door


btw...do i still get the car????



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