How smart is /b/?

0.25% chance

1/4 obviously

>>724696262
>>724696312

Stupid faggots.

read the question and try again.

>>724696200
50%

>>724696200
over 9000

>>724696469
>>724696312
>>724696262

Are /b/tards really this stupid?

>>724696200
My entire dick. That's the answer.

>>724696200
It's a 1 in 3 chance.

75%

>>724696200
It's 33.3333..% (phasespace with one coin being heads is [H,T], [T, H], [H,H] - ergo 1/3)

50%

>>724696200
the jews did this

>>724696617

Only correct answer so far.

>>724696576
So it's not 50%? I was always weak with probability

File: 1272143500915.jpg (14KB, 400x300px) Image search: [Google]

14KB, 400x300px

>>724696725
I think you know what needs to be done to them.

I can't believe how retarded you all are

>>724696749
>So it's not 50%?

No. it's 1/3.

Its Faggot%

or Faggot / Newfag

which can be simplified as:

33 point faggot faggot faggot


take ur fucking stupid ass math shit somewhere else, post tits,rekt,memes,CP, or get the fuck out

>>724696999
how

>>724696999
How can you be sure? Is it cause 999 when I turn my screen upside down is 666. Therefore you are the devil and a liar.

We have 4 different outcomes: (H,H), (H,T), (T,H) and (T,T). Somehow we now know that AT LEAST one of them if heads, which eliminates the outcome (T,T), leaving us 3 outcomes. Only 1 of these, (H,H) is "both are heads", hence the probability is 1 in 3 = 0,33 = 33 %.

>>724696749
>>724697060

the options are either:
heads -tails
tails-heads
or heads-heads

ergo 1 in 3

>>724696200
There are four possibilities - 1 tails, 2 tails. 1 heads, 2 tails. 1 tails, 2 heads. 1 heads, 2 heads. The first is ruled out, so the odds are 2/3.

Well first we have to establish what a "coin" is on a conceptual level.

What does "both" imply and how can we measure it?

>>724697019
>tits
>rekt
>memes
>cp

Which /b/ are you on? Cause it isn't this one.

>>724697185
No it said at least one of them landed heads

>>724697060

Sample space before condition:
{(HH), (HT), (TH), (TT)}

At least 1 landed heads. New sample space:
{(HH), (HT), (TH)}

HH is 1 of those 3

1/3.

It's obviously 23.6% that the other one is also heads.

>>724696200
3/4
[Heads, Heads] - [Heads, Tails] - [Tails, Heads] - Tails, Tails

>>724697294
and so they did,
had it been worded "the first always lands on heads" then yes it would be 50/50 as the coins are independant, but as it is worded it is 1/3

>>724697221
WHAT?

>>724697294
>No it said at least one of them landed heads

Yes, so he's right.

HH or HT or TH

1/3

Retards.

Answer = 1/3

Flip 2 coins. 4 equally probable outcomes
HH
HT
TH
TT

At least one landed heads, so TT is eliminated from the probability space, leaving three:
HH
HT
TH

HH is 1 of those 3.

1/3

Mathematically, we solve using Bayes' theorem:

This is a conditional probability question, so use Bayes' theorem to solve.
P(A|B) = P(A∩B)/(P(B))

Explanation for faggots:

COnditional probability questions take the form:
>What is the probability of Event A given Event B?

OPs question is
>What is the probability that BOTH coins landed heads, given that AT LEAST ONE coin landed heads?

So here

A = "both coins are heads" = {(HH)} = 1/4
B = "at least one coin is heads" = {(HH), (HT), (TH)} = 3/4

P(A|B) = P(A∩B)/(P(B)) = (1/4)/(3/4) = 1/3

File: irbru.jpg (62KB, 506x578px) Image search: [Google]

62KB, 506x578px

>>724697363
Am I supposed to be taking notes?

>>724696741
How are you this stupid?

100%, head is easy to get.

THE ANSWER IS 1/2

ITS LITERALLY A COIN FLIP, THE SECOND COIN WILL LAND HEADS OR TAILS REGARDLESS OF THE FIRST COIN

>>724696999
It's really not. It's 3/4

>>724697460

Reread the question, dumbass.

>>724696200
impossible to tell as it's random chance

>>724697501

My copypasta.

Now I can retire from the internet having achieved my life goal.

>>724696999
You are a retarded

>>724696749
it's a given from the problem that one is a head, so yeah you are right, it's 50%
rest of people are brainlets who just try to blowjob themselves until their neck cracks leaving them just fine

>>724697533

Retard detected, guys.

>>724696200
Oh this again..... first one is heads - FORGET IT ! Its gone you could have had a fucking million and 1 heads in a row and it means NOTHING ! Flip the coin its 50/50 or 50% chance ! you must all be Murican's ?

>>724696703
Wrong

>>724697676

You're a fucking moron lol

>>724697504
The retard is trying to sound smart
Here's the obvious explanation : if it can be Heads and tails and one's always going to be heads it can be either head,tail / head,head / tail,head That's 1/3 since it's 3 outcomes aka 33.3333

>>724697768
>first one is heads

Wrong, dumbass.

1/3

>>724697481
Oh I thought it meant that, sorry English isn't my first language.
>>724697492
I thought it meant one coin always lands on that side

>>724696200
k-mart smart, nigga

>>724697814
lel XD :D >:(

>>724697921
>I thought it meant one coin always lands on that side

2 reguar coins were flipped and at least 1 landed heads.

It doesn't always land heads.

1/3.

>>724697955

kek you're still retarded lmao XD #dumbassIt's1/3

Its a 50 % chance you fucking idiots

>>724698165

100% probability that you're a fucking moron.

>>724698112
lolololol what a newfag 50% is the true alpha answer, everything else is le funny potato answer meme
>1/3
>not a retarded inbreed
pick one famalamalamalamalamamaallalamam

one coin landed head,
so there are 50% of probability that the second one lands head as well.

>>724697363
Correct, 10/10

>>724696200
1/3