• Log InLog In
  • Register
Liquid`
Team Liquid Liquipedia
EDT 00:08
CEST 06:08
KST 13:08
  • Home
  • Forum
  • Calendar
  • Streams
  • Liquipedia
  • Features
  • Store
  • EPT
  • TL+
  • StarCraft 2
  • Brood War
  • Smash
  • Heroes
  • Counter-Strike
  • Overwatch
  • Liquibet
  • Fantasy StarCraft
  • TLPD
  • StarCraft 2
  • Brood War
  • Blogs
Forum Sidebar
Events/Features
News
Featured News
Code S RO8 Preview: herO, Zoun, Bunny, Classic3Code S RO8 Preview: Rogue, GuMiho, Solar, Maru3BGE Stara Zagora 2025: Info & Preview27Code S RO12 Preview: GuMiho, Bunny, SHIN, ByuN3The Memories We Share - Facing the Final(?) GSL47
Community News
BGE Stara Zagora 2025 - Replay Pack2Weekly Cups (June 2-8): herO doubles down1[BSL20] ProLeague: Bracket Stage & Dates9GSL Ro4 and Finals moved to Sunday June 15th13Weekly Cups (May 27-June 1): ByuN goes back-to-back0
StarCraft 2
General
Jim claims he and Firefly were involved in match-fixing Code S RO8 Preview: herO, Zoun, Bunny, Classic The SCII GOAT: A statistical Evaluation DreamHack Dallas 2025 - Official Replay Pack BGE Stara Zagora 2025 - Replay Pack
Tourneys
[GSL 2025] Code S:Season 2 - RO8 - Group A RSL: Revival, a new crowdfunded tournament series SOOPer7s Showmatches 2025 Sparkling Tuna Cup - Weekly Open Tournament Sea Duckling Open (Global, Bronze-Diamond)
Strategy
[G] Darkgrid Layout Simple Questions Simple Answers [G] PvT Cheese: 13 Gate Proxy Robo
Custom Maps
[UMS] Zillion Zerglings
External Content
Mutation # 477 Slow and Steady Mutation # 476 Charnel House Mutation # 475 Hard Target Mutation # 474 Futile Resistance
Brood War
General
BW General Discussion BGH auto balance -> http://bghmmr.eu/ FlaSh Witnesses SCV Pull Off the Impossible vs Shu StarCraft & BroodWar Campaign Speedrun Quest Will foreigners ever be able to challenge Koreans?
Tourneys
NA Team League 6/8/2025 [ASL19] Grand Finals [BSL20] GosuLeague RO16 - Tue & Wed 20:00+CET [Megathread] Daily Proleagues
Strategy
I am doing this better than progamers do. [G] How to get started on ladder as a new Z player
Other Games
General Games
Nintendo Switch Thread Stormgate/Frost Giant Megathread Beyond All Reason Path of Exile What do you want from future RTS games?
Dota 2
Official 'what is Dota anymore' discussion
League of Legends
Heroes of the Storm
Simple Questions, Simple Answers Heroes of the Storm 2.0
Hearthstone
Heroes of StarCraft mini-set
TL Mafia
TL Mafia Community Thread Vanilla Mini Mafia
Community
General
US Politics Mega-thread Things Aren’t Peaceful in Palestine UK Politics Mega-thread Russo-Ukrainian War Thread Vape Nation Thread
Fan Clubs
Maru Fan Club Serral Fan Club
Media & Entertainment
Korean Music Discussion [Manga] One Piece
Sports
2024 - 2025 Football Thread Formula 1 Discussion NHL Playoffs 2024
World Cup 2022
Tech Support
Computer Build, Upgrade & Buying Resource Thread
TL Community
The Automated Ban List
Blogs
A Better Routine For Progame…
TrAiDoS
StarCraft improvement
iopq
Heero Yuy & the Tax…
KrillinFromwales
I was completely wrong ab…
jameswatts
Need Your Help/Advice
Glider
Trip to the Zoo
micronesia
Customize Sidebar...

Website Feedback

Closed Threads



Active: 28021 users

Probability Help

Blogs > Peter[Deuce]
Post a Reply
1 2 Next All
Peter[Deuce]
Profile Blog Joined November 2007
United States93 Posts
January 08 2009 05:03 GMT
#1
Suppose:
55% of adults like coffee.
25% of adults like tea.
45% of adults like cola.

and
15% drink both coffee and tea
5% drink all beverages
25% drink both coffee and cola
5% drink only tea

a) What percent of adults drink only cola?

b) What percent drink none of these beverages?

Note: This is a high school problem; question may be easily solved. Don't blame me for my ineptitude!

*
YianKutKu
Profile Joined January 2009
United States142 Posts
Last Edited: 2009-01-08 05:09:04
January 08 2009 05:06 GMT
#2
I remember doing these problems in my pre-calc class. Forgot now.

edit: use a tree diagram
hwighting!
Avidkeystamper
Profile Blog Joined June 2008
United States8552 Posts
January 08 2009 05:08 GMT
#3
Did you try making a Venn Diagram?

Have each region represent a specific variable, and there are 7 regions non-overlapping regions, coffee, tea, cola, coffe/cola, coffe/tea, cola/tea, and coffe/cola/tea. rewrite the information given and you have a system of 7 varialbes and equations and you can just solve from there.

Also, this isn't a probability problem.
Jaedong
SpiritoftheTunA
Profile Blog Joined August 2006
United States20903 Posts
January 08 2009 05:12 GMT
#4
45 cola - 25 coffeecola - 5 all - (25tea - 15coffeetea - 5all - 5onlytea)teacola = 15 onlycola?

100 - (15coffeetea + 5all + 25coffeecola + 5onlytea + 0teacola + 15onlycola + (55coffee - 15coffeetea - 5all - 25coffeecola)onlycoffee = 25none?

i always sucked at probability/statistics/w/e so yeah iuno mang
posting on liquid sites in current year
Fontong
Profile Blog Joined December 2007
United States6454 Posts
January 08 2009 05:13 GMT
#5
^^Avidkeystamper has a clever solution, I've actually never seen this type of problem in my life despite having just taken multivariable calc(lol...). I really wouldn't know how to do it without thinking a lot.

On January 08 2009 14:06 YianKutKu wrote:
I remember doing these problems in my pre-calc class. Forgot now.

edit: use a tree diagram

You are a hunters player, yes? I think I've seen you around bnet.
[SECRET FONT] "Dragoon bunker"
Grobyc
Profile Blog Joined June 2008
Canada18410 Posts
January 08 2009 05:14 GMT
#6
More effort for homework threads please.
All you did was post the problem, what do you know about the problem thus far if anything?
If you watch Godzilla backwards it's about a benevolent lizard who helps rebuild a city and then moonwalks into the ocean.
Zapdos_Smithh
Profile Blog Joined October 2008
Canada2620 Posts
Last Edited: 2009-01-08 05:30:42
January 08 2009 05:17 GMT
#7
Make a Venn Diagram of all three. First one is pretty simple once you get it going but the second one tricked me, though I think I got it right (I took math 12 last year, and I'm in arts now so I'm not really that fresh @ this stuff), however:

Answers should be:
a)15%
b)20%

Btw you should say that 55% of adults drink coffee/tea/cola, because liking and drinking can be two different things (hope that didn't change the answer).
Zapdos_Smithh
Profile Blog Joined October 2008
Canada2620 Posts
January 08 2009 05:18 GMT
#8
Do you have the answer key? can you tell us the answers? im curious now.
Peter[Deuce]
Profile Blog Joined November 2007
United States93 Posts
January 08 2009 05:18 GMT
#9
Well I tried the venn diagram with 3 overlaps and each section labeled a different drink. But I got confused in the process of trying to find the answer for each question. I know about the addition rules for disjoint events like P(A) + P(B)=P(A or B).

This problem has the overlap and I honestly don't have any idea what to do.
I think it has something to do with P(A or B)=P(A) + P(B) - P(A and B)
but there's three variables so that got me pretty confused.
Peter[Deuce]
Profile Blog Joined November 2007
United States93 Posts
January 08 2009 05:19 GMT
#10
On January 08 2009 14:17 Resonance wrote:
Make a Venn Diagram of all three. First one is pretty simple once you get it going but the second one tricked me, though I think I got it right (I took math 12 last year, and I'm in arts now so I'm not really that fresh @ this stuff), however:

Answers should be:
a)15%
b)15%

Btw you should say that 55% of adults drink coffee/tea/cola, because liking and drinking can be two different things (hope that didn't change the answer).

Oh I just copied the problem from the book. I don't have an answer key though =[
Zapdos_Smithh
Profile Blog Joined October 2008
Canada2620 Posts
Last Edited: 2009-01-08 05:30:59
January 08 2009 05:23 GMT
#11
Divinek
Profile Blog Joined November 2006
Canada4045 Posts
Last Edited: 2009-01-08 05:27:06
January 08 2009 05:24 GMT
#12
a) 15%
b) 20%

do these add up

[image loading]


I have alot of pracitce with these and this was a rather easy one as long as i know how to add
Never attribute to malice that which can be adequately explained by stupidity.
Oh goodness me, FOX tv where do you get your sight? Can't you keep track, the puck is black. That's why the ice is white.
il0seonpurpose
Profile Blog Joined January 2007
Korea (South)5638 Posts
Last Edited: 2009-01-08 05:26:21
January 08 2009 05:25 GMT
#13
I had the exact same question, ah I forgot though! Solve for coffee and tea and then the remainder should be coke.

A= Coffee
B= Tea

P(55)+ P(25)-P(15)= 55

So the remaining should be 45% who like coke

Actually I'm not sure if that's right but I think .45 is one of the answers


Edit: NVM, look at the diagram above ^^^^^^
Zapdos_Smithh
Profile Blog Joined October 2008
Canada2620 Posts
Last Edited: 2009-01-08 05:31:53
January 08 2009 05:27 GMT
#14
That sucks no answers how are you supposed to know your doing a question right.
SpiritoftheTunA
Profile Blog Joined August 2006
United States20903 Posts
Last Edited: 2009-01-08 05:29:36
January 08 2009 05:28 GMT
#15
yeah they do divinek, i just realized the mistake in mine was that i assumed the phrase "coffee and tea" meant "coffee, tea, but not cola" and etc etc etc so it led to me calculating that tea+cola and not coffee was 0

i dunno man honestly it could go both ways
posting on liquid sites in current year
Zapdos_Smithh
Profile Blog Joined October 2008
Canada2620 Posts
January 08 2009 05:29 GMT
#16
Fucking hell everybody has different answers, I am going to do this again.
Peter[Deuce]
Profile Blog Joined November 2007
United States93 Posts
Last Edited: 2009-01-08 05:32:19
January 08 2009 05:30 GMT
#17
Ah I get the first, still wondering what I subtract to get the second.

Yeah my teacher gave me an even problem; I don't know why. The second answer seems right. Thanks. I never liked venn diagrams =/
Zapdos_Smithh
Profile Blog Joined October 2008
Canada2620 Posts
January 08 2009 05:30 GMT
#18
yeah I made another mistake Divinek has it right.
Divinek
Profile Blog Joined November 2006
Canada4045 Posts
January 08 2009 05:30 GMT
#19
On January 08 2009 14:27 Resonance wrote:
No answer? Man that's a bad teaching method how are you supposed to know if what you are doing is right?

Anyway here is my logic for both of your questions:

For the first one it's pretty simple, just find the only Cola drinkers %.

For the second, what I did was get all the percentages (after broken down, 15+25+5+15+5+10+0=75)

Then just go 100% - 75 = 25...rofl yeah ok so I made that mistake there I'm really fucking tired haha

So answers are 15% and 25%


When you get to 3rd/4th year math courses atleast none of the books have answers, at all.

It's suprising how many people got this wrong. Pictures really do help, always, always, always.
Never attribute to malice that which can be adequately explained by stupidity.
Oh goodness me, FOX tv where do you get your sight? Can't you keep track, the puck is black. That's why the ice is white.
SpiritoftheTunA
Profile Blog Joined August 2006
United States20903 Posts
January 08 2009 05:31 GMT
#20
On January 08 2009 14:30 Divinek wrote:
Show nested quote +
On January 08 2009 14:27 Resonance wrote:
No answer? Man that's a bad teaching method how are you supposed to know if what you are doing is right?

Anyway here is my logic for both of your questions:

For the first one it's pretty simple, just find the only Cola drinkers %.

For the second, what I did was get all the percentages (after broken down, 15+25+5+15+5+10+0=75)

Then just go 100% - 75 = 25...rofl yeah ok so I made that mistake there I'm really fucking tired haha

So answers are 15% and 25%


When you get to 3rd/4th year math courses atleast none of the books have answers, at all.

It's suprising how many people got this wrong. Pictures really do help, always, always, always.

it was a semantics issue, my method was perfectly fine if in the OP the phrases like "cola and coffee" meant exclusive of tea
posting on liquid sites in current year
1 2 Next All
Please log in or register to reply.
Live Events Refresh
Replay Cast
02:00
LiuLi 40 / Enki Pro Series 5
Liquipedia
Online Event
00:00
LATAM SC2 League: Semifinals
Liquipedia
GSL
23:00
Replay Cast
Rogue vs GuMiho
Maru vs Solar
LiquipediaDiscussion
[ Submit Event ]
Live Streams
Refresh
StarCraft 2
ROOTCatZ 256
Nina 220
StarCraft: Brood War
Rain 2512
Sea 2001
PianO 322
Leta 80
Noble 43
Terrorterran 18
Icarus 9
Dota 2
monkeys_forever433
LuMiX1
League of Legends
JimRising 787
Counter-Strike
Stewie2K648
Heroes of the Storm
Khaldor136
Other Games
summit1g10624
C9.Mang01025
hungrybox650
WinterStarcraft324
ViBE181
ToD171
Maynarde117
Mew2King76
CosmosSc2 24
Organizations
Other Games
gamesdonequick1099
StarCraft 2
Blizzard YouTube
StarCraft: Brood War
BSLTrovo
sctven
[ Show 16 non-featured ]
StarCraft 2
• Berry_CruncH306
• Hupsaiya 81
• AfreecaTV YouTube
• intothetv
• Kozan
• IndyKCrew
• LaughNgamezSOOP
• Migwel
• sooper7s
StarCraft: Brood War
• Azhi_Dahaki15
• BSLYoutube
• STPLYoutube
• ZZZeroYoutube
League of Legends
• Doublelift5548
• Lourlo1029
• Stunt294
Upcoming Events
GSL Code S
5h 22m
herO vs Zoun
Classic vs Bunny
The PondCast
5h 52m
Replay Cast
19h 52m
WardiTV Invitational
1d 6h
OSC
1d 8h
Korean StarCraft League
1d 22h
SOOP
2 days
sOs vs Percival
CranKy Ducklings
2 days
WardiTV Invitational
2 days
Cheesadelphia
2 days
[ Show More ]
CSO Cup
2 days
GSL Code S
3 days
Sparkling Tuna Cup
3 days
Replay Cast
3 days
Wardi Open
4 days
Replay Cast
4 days
Replay Cast
5 days
RSL Revival
5 days
Cure vs Percival
ByuN vs Spirit
RSL Revival
6 days
herO vs sOs
Zoun vs Clem
Replay Cast
6 days
Liquipedia Results

Completed

CSL Season 17: Qualifier 2
BGE Stara Zagora 2025
Heroes 10 EU

Ongoing

JPL Season 2
BSL 2v2 Season 3
BSL Season 20
KCM Race Survival 2025 Season 2
NPSL S3
Rose Open S1
CSL 17: 2025 SUMMER
2025 GSL S2
BLAST.tv Austin Major 2025
ESL Impact League Season 7
IEM Dallas 2025
PGL Astana 2025
Asian Champions League '25
BLAST Rivals Spring 2025
MESA Nomadic Masters
CCT Season 2 Global Finals
IEM Melbourne 2025
YaLLa Compass Qatar 2025
PGL Bucharest 2025
BLAST Open Spring 2025

Upcoming

Copa Latinoamericana 4
CSLPRO Last Chance 2025
CSLPRO Chat StarLAN 3
K-Championship
SEL Season 2 Championship
Esports World Cup 2025
HSC XXVII
Championship of Russia 2025
Murky Cup #2
Esports World Cup 2025
BLAST Bounty Fall 2025
BLAST Bounty Fall Qual
IEM Cologne 2025
FISSURE Playground #1
TLPD

1. ByuN
2. TY
3. Dark
4. Solar
5. Stats
6. Nerchio
7. sOs
8. soO
9. INnoVation
10. Elazer
1. Rain
2. Flash
3. EffOrt
4. Last
5. Bisu
6. Soulkey
7. Mini
8. Sharp
Sidebar Settings...

Advertising | Privacy Policy | Terms Of Use | Contact Us

Original banner artwork: Jim Warren
The contents of this webpage are copyright © 2025 TLnet. All Rights Reserved.