-
Posts
-
77 Just Nothing
It all depends where the poles on the magnet are located .The real magnet will have a magnetic field at its poles, but not at its centre so if you take the iron bar and touch its tip to the magnet’s centre, the iron bar will not be attracted. This is assuming that the magnet’s poles are at its ends. If the poles run through the length of the magnet, then it would be much harder to use this method so we require clarification as to the type of magnet regarding the poles
2 members liked this post.
official answer is……..Touch the end of one to the centre of the other.If they are attracted, the touching end belongs to the magnet;if not, the touching centre belongs to the magnet.
Alright, some electricity and force of energy applied.
Hee hee…. just said it wrong…1 member liked this post.
I’m in a fairly heated debate with someone on a football forum over probability and it’s an old age argument you may have encountered. To summarise , there are three doors, one has a car behind it and two have goats. The contestant picks one door and the host picks a door with a goat behind it leaving the door the contestant has picked and one more door. The host then offers the contestant the option of switching. My argument is it is now a 50/50 chance of having a car or a goat and switching doors is irrelevant but common opinion amongst PHD maths graduates is theprobability benefit of switching increasing the chance of getting to the car to 2/3 … how so?
https://en.m.wikipedia.org/wiki/Monty_Hall_problem?wprov=sfla1
My first thought would be that because it is stated that the host has already picked a door with a goat behind it then the contestant has a 50/50 chance of getting a car or a goat as they are the only 2 options left….i will think for a while on the other…
Just to clarify…..which doors does the contestant have the offer of switching?
Ok read the article………as far as i can see the contestant has 2 choices….to stay with his choice or the choice of the other door.Which is still a 50/50 gamble and makes no difference to the contestant in reality as he has no clue to which door either the car or goat lies behind. i think it’s done just for tense and dramatic effect. They did the same thing on Deal or No Deal where the contestant is left with a box and the banker gives him the choice to switch boxes. There’s no other point really only to add tension to the show.
If the contestant knows that out of 2 doors he has the choice of opening, one has a car and one has a goat then it is a 50/50 gamble. The host has actually bettered the contestants odds by opening a door first and getting a goat…making the contestants chances greater as a 50/50 gamble is greater success rate than having to pick a door out of 3.
The reason (in my opinion) that quiz shows do this switching technique is like i said to add tension to the show and great cheers from the audience if the right door is picked or big sighs and ooos if the wrong door is picked.
This technique is some how seen as showing whether the contestant is some how shrewd and clever or reckless and greedy when in fact it’s just blind luck.
3 doors 2 have goats , one has a car behind it .. contestant doesn’t know whats behind any of them just the host. Contestant picks one door at random (door 1), host has to show a goat to the contestant illustrating which doors it’s behind ( door 2 or 3) . The contestant now has two doors , one has a car obviously and one has a goat. The argument is if he switches doors from one unknown door to another unknown changing his original choice of door, he increases his mathematical probability of getting the car to 2/3 instead of remaining with the current unknown door 1/2. If you read the link I posted , maths PHD graduates concur with this yet can’t see how it would be anything other than 50/50 whichever door is picked.
Ok read the article………as far as i can see the contestant has 2 choices….to stay with his choice or the choice of the other door.Which is still a 50/50 gamble and makes no difference to the contestant in reality as he has no clue to which door either the car or goat lies behind. i think it’s done just for tense and dramatic effect. They did the same thing on Deal or No Deal where the contestant is left with a box and the banker gives him the choice to switch boxes. There’s no other point really only to add tension to the show. If the contestant knows that out of 2 doors he has the choice of opening, one has a car and one has a goat then it is a 50/50 gamble. The host has actually bettered the contestants odds by opening a door first and getting a goat…making the contestants chances greater as a 50/50 gamble is greater success rate than having to pick a door out of 3. The reason (in my opinion) that quiz shows do this switching technique is like i said to add tension to the show and great cheers from the audience if the right door is picked or big sighs and ooos if the wrong door is picked. This technique is some how seen as showing whether the contestant is some how shrewd and clever or reckless and greedy when in fact it’s just blind luck.
This is exactly my thought process as well but looking down the article , there are some very intelligent people saying otherwise which makes me question my initial opinion.
Get involved in this discussion! Log in or register now to have your say!