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Hoping someone can help me figure this out, was trying to work this out with my father in law last night. Basically what's the probability of rolling a 1 on a dice? 1/6 surely? Therefore what's… Read More

Hoping someone can help me figure this out, was trying to work this out with my father in law last night.

Basically what's the probability of rolling a 1 on a dice? 1/6 surely?

Therefore what's the probability of rolling a 1 on a dice if you roll it 6 times? I said it was 1/1 but as he quite rightly pointed out that would be a certainty and it's not a certainty. The only way I can think to explain it is that it is all based on averages, ie if you roll it 6 times then on average you would get a 1 once which would be 1/1 wouldn't it???

Basically what's the probability of rolling a 1 on a dice? 1/6 surely?

Therefore what's the probability of rolling a 1 on a dice if you roll it 6 times? I said it was 1/1 but as he quite rightly pointed out that would be a certainty and it's not a certainty. The only way I can think to explain it is that it is all based on averages, ie if you roll it 6 times then on average you would get a 1 once which would be 1/1 wouldn't it???

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(302) Jump to unreadPost a comment1/6 means you've got one chance in 6 of getting the number. theres 6 numbers on the die, so EVERY number is 1/6

1/6 means you've got one chance in 6 of getting the number. theres 6 numbers on the die, so EVERY number is 1/6

I mean getting a 1 somewhere on your six throws.

So you throw six times and therefore will get six numbers, what's the probability of one of those being a 1?

Which would mean you'd get a 1 every 46656 times?:roll:

Are you sure?

So if I ran this experiment 46656 times then I would only get a 1 once???

So if I ran this experiment 46656 times then I would only get a 1 once???

do it and we will see, lol :thumbsup:

There you go,

told you I was right :thumbsup: *cheeky smile*

There you go,

told you I was right :thumbsup: *cheeky smile*

That part's easy!!! That's for rolling the dice ONCE!

They were unsuccessfull 5 times.

Successful once.

he doesn't mean in a row.

No, that means in 6 rolls you'd get a 1 six times.

If you roll it 6 times you have a 6/36 chance of rolling a 6.

They were unsuccessfull 5 times.

Successful once.

So as a whole it happened 1 time out of one? See my point?

It's the same.

Throw 1 dice = 1/6 chance of getting it = 1/6

Throw 2 dice = 2/12 chance of getting it = 1/6

Throw 3 dice = 3/18 chance of getting it = 1/6

etc.

o ok... so whats the question??!?

I'm talking about as a whole.

It's 1/6.

1/6 x 5/6 x 5/6 x 5/6 x 5/6 x 5/6 = 3125/46656 = 0.6698

5/6 = chance of not getting a 1

1/6 = chance of getting a 1

See, this is where you just threw me out the plane..

Throw 1 dice = 1/6 chance of getting it = 1/6

Throw 2 dice = 2/12 chance of getting it = 1/6

Throw 3 dice = 3/18 chance of getting it = 1/6

etc.

So if I threw a dice one thousand times then the probability of getting at least one 1 would be 1/6? Surely not??? I would be virtually guarenteed to get a one somewhere!

Nope, it's still 1/6. You are assuming that what you have thrown before affects the next throw - it doesn't.

If you toss a coin 999 times and get heads each time, the chances of getting tails on the next occasion is still 1/2.

1/6 x 5/6 x 5/6 x 5/6 x 5/6 x 5/6 = 3125/46656 = 0.6698

5/6 = chance of not getting a 1

1/6 = chance of getting a 1

:thumbsup:

If you toss a coin 999 times and get heads each time, the chances of getting tails on the next occasion is still 1/2.

:thumbsup:

Wrong, that is the probabilty of one outcome on one die!:oops:

The probability of throwing a number on single die is 1 in 6 not as in this case 6 throws so all you saying 1/6 are wrong.

If you toss a coin 999 times and get heads each time, the chances of getting tails on the next occasion is still 1/2.

I'm not talking about the next occasion, I'm talking about one of the throws resulting in a 1. To use your example if you tossed the coin 999 times then you surely would be virtually guarnenteed to have got a head?

I thought passing maths at GCSE was the end of using numbers! Obviously not!

If you roll it 6 times you have a 6/36 chance of rolling a 6.

Wrong

Throw 1 dice = 1/6 chance of getting it = 1/6

Throw 2 dice = 2/12 chance of getting it = 1/6

Throw 3 dice = 3/18 chance of getting it = 1/6

etc.

Wrong

If you roll a dice 6 times but only get a 1 once then these are the results:

1/6 x 5/6 x 5/6 x 5/6 x 5/6 x 5/6 = 3125/46656 = 0.6698

5/6 = chance of not getting a 1

1/6 = chance of getting a 1

and yes its right Im the king of maths...

Thanks, I know that! What's the right answer????

If you roll a dice 6 times but only get a 1 once then these are the results:

1/6 x 5/6 x 5/6 x 5/6 x 5/6 x 5/6 = 3125/46656 = 0.6698

5/6 = chance of not getting a 1

1/6 = chance of getting a 1

and yes its right Im the king of maths...

So you've got a less then one chance of getting a one? o.O

1/6 x 5/6 x 5/6 x 5/6 x 5/6 x 5/6 = 3125/46656 = 0.6698

5/6 = chance of not getting a 1

1/6 = chance of getting a 1

Also wrong, that is the probability of throwing a 1 on 1 die but if you don't throw a 1 on 5 dice, then on the 6th this is 1 in 6. In this scenario, you have calculated the probabilty of throwing a 1 only once in 6 throws :p

If you roll a dice 6 times but only get a 1 once then these are the results:

1/6 x 5/6 x 5/6 x 5/6 x 5/6 x 5/6 = 3125/46656 = 0.6698

5/6 = chance of not getting a 1

1/6 = chance of getting a 1

and yes its right Im the king of maths...

Isn't it 1/6 x 6/6 x 6/6 x 6/6 x 6/6 x 6/6? ie 1/1.

Because the others don't matter, as long as one is 1/6?