| Maths boffins 18:53 - Jun 22 with 6309 views | BrixtonBlue |
I just put my hand into a bag of skittles and pulled out 4 sweets ...all green. What are the chances of that?!? |  |
| |  |
| Maths boffins on 11:09 - Jun 23 with 1250 views | eireblue |
| Maths boffins on 10:27 - Jun 23 by mos |
Presuming that there are 5 different colours of skittles in your bag, and there are equal amounts of them, then...
Red, Green, Purple, Orange and Yellow are the flavours present in your bag, with the chance of pulling any of those colours at 1/5 or 0.2 chance, then,
0.2 x 0.2 x 0.2 x 0.2 or 0.2^4 = 0.0016
So you had a 0.16% chance or 1 in 625 chance of picking 4 greens in a row.
Incredible. |
Actual it is more of a combination problem, than probability.
Dolly said he picked 4 skittles of the same colour in one go.
We do need to know the number of skittles and the number of each colour.
So say there was 10 skittles of each colour.
There are 230300 ways of picking 4 skittles.
This where my logic may break down.
There are about 210 ways of picking 4 green skittles
So the chances of getting 4 green skittles in one grab are 210/230300
Which is about 0.0009. |  | | |
| Maths boffins on 11:14 - Jun 23 with 1242 views | mos |
| Maths boffins on 11:09 - Jun 23 by eireblue |
Actual it is more of a combination problem, than probability.
Dolly said he picked 4 skittles of the same colour in one go.
We do need to know the number of skittles and the number of each colour.
So say there was 10 skittles of each colour.
There are 230300 ways of picking 4 skittles.
This where my logic may break down.
There are about 210 ways of picking 4 green skittles
So the chances of getting 4 green skittles in one grab are 210/230300
Which is about 0.0009. |
I think beforehand we just sort of ignored that dolly picked them all at once, and just presumed he picked them consecutively.
Although if we are looking for the answer to the one grab approach then I guess you’re the winner. |  |
| |
| Maths boffins on 11:22 - Jun 23 with 1231 views | BanksterDebtSlave |
| Maths boffins on 11:14 - Jun 23 by mos |
I think beforehand we just sort of ignored that dolly picked them all at once, and just presumed he picked them consecutively.
Although if we are looking for the answer to the one grab approach then I guess you’re the winner. |
For 5 colours aren't there only 5x4x3x2x1 combinations (120) but that would be chosing 5 skittles. Rommers could probably help if it was greyhounds! |  |
| |
| Maths boffins on 12:09 - Jun 23 with 1212 views | Lord_Lucan |
3 men went to a hotel. The man behind the desk said the room is £30, so
each man put up £10 each and went to the room. A little while later he
realized the room was only £25, so he sent the bellhop back to the 3 guys
room with £5. On the way to the room the bellhop couldn't figure how to
split the £5 between the 3 guys so he just gave each one of them £1 and he
kept the other £2. That left the 3 guys paying £9 each for the room.
3x9=27 + the 2 that the bellhop kept = £29. Where's the other pound? |  |
| |
| Maths boffins on 12:33 - Jun 23 with 1203 views | BrixtonBlue |
| Maths boffins on 12:09 - Jun 23 by Lord_Lucan |
3 men went to a hotel. The man behind the desk said the room is £30, so
each man put up £10 each and went to the room. A little while later he
realized the room was only £25, so he sent the bellhop back to the 3 guys
room with £5. On the way to the room the bellhop couldn't figure how to
split the £5 between the 3 guys so he just gave each one of them £1 and he
kept the other £2. That left the 3 guys paying £9 each for the room.
3x9=27 + the 2 that the bellhop kept = £29. Where's the other pound? |
I don't do maths. I'll get laughed out of town I'm sure but I'm stumped. | |
| |
| Maths boffins on 12:40 - Jun 23 with 1194 views | wkj |
100% chance, as all skittles are green under their colourful shell which rubs off fairly easy if youve got sweaty hands. Doesn't really matter, skittles are shyte- get a proper sweet in you lke a wherthers original or blue smarties |  |
| |
| Maths boffins on 12:42 - Jun 23 with 1190 views | Lord_Lucan |
| Maths boffins on 12:33 - Jun 23 by BrixtonBlue |
I don't do maths. I'll get laughed out of town I'm sure but I'm stumped. |
Yes, it stumps me as well. I never did very well in maths at school but I have evolved a bit since.
RKD was a maths genius when he was a youngster, he used to go to organised maths weekends when he was at primary school. They used to stay for the whole weekend in a maths room in Shotley, it all sounds a bit suspect now. | |
| |
| Maths boffins on 12:50 - Jun 23 with 1178 views | Herbivore |
| Maths boffins on 12:33 - Jun 23 by BrixtonBlue |
I don't do maths. I'll get laughed out of town I'm sure but I'm stumped. |
There is no missing pound, it's based on incorrect maths. |  |
| |
Login to get fewer ads
| Maths boffins on 12:52 - Jun 23 with 1174 views | Lord_Lucan |
| Maths boffins on 12:50 - Jun 23 by Herbivore |
There is no missing pound, it's based on incorrect maths. |
So where's the quid? | |
| |
| Maths boffins on 12:55 - Jun 23 with 1171 views | NewcyBlue |
| Maths boffins on 12:33 - Jun 23 by BrixtonBlue |
I don't do maths. I'll get laughed out of town I'm sure but I'm stumped. |
It’s word play rather than a maths problem. |  |
| |
| Maths boffins on 13:00 - Jun 23 with 1167 views | Herbivore |
| Maths boffins on 12:52 - Jun 23 by Lord_Lucan |
So where's the quid? |
There is no missing quid. The men have paid £27 for a room that costs £25, not for a room that costs £30. The bellhop's £2 should be subtracted and not added and you then get your £25. It's one of those problems that is designed to make you scratch your head but actually there's nothing to it, they've created a sum that doesn't actually relate to what is happening in the scenario in order to give the appearance of there being a missing quid. | |
| |
| Maths boffins on 13:01 - Jun 23 with 1166 views | Herbivore |
| Maths boffins on 12:55 - Jun 23 by NewcyBlue |
It’s word play rather than a maths problem. |
Yep. | |
| |
| Maths boffins on 13:14 - Jun 23 with 1150 views | noggin |
What if the green sweets were added to the bag last, and so were all at the top? [Post edited 23 Jun 2018 15:48]
|  |
| |
| |
By continuing to use the site, you agree to our use of cookies and to abide by our Terms and Conditions.
