Zillian and Zillo

Go down

What is your answer?

0% 0% 
[ 0 ]
50% 50% 
[ 1 ]
50% 50% 
[ 1 ]
0% 0% 
[ 0 ]
0% 0% 
[ 0 ]
 
Total Votes : 2

Zillian and Zillo

Post  Archis on Sun Oct 12, 2008 11:30 pm

Zillian tosses one penny and Zillo tosses two pennies. The probability that Zillo gets the same number of head that Zillian gets is what common fraction?

A) 1/4
B) 3/8
C) 1/2
D) 2/3
E) 3/4

I'll post the solution after a significant number of replies.
avatar
Archis
Admin
Admin

Posts : 78
Points : 38
Reputation : 4
Join date : 2008-09-29

View user profile http://nysmithmath.forumotion.net

Back to top Go down

Re: Zillian and Zillo

Post  Ben R on Mon Oct 13, 2008 1:27 am

Um.. 1/4.. because.... they need better names...

I'll actually try the problem in a bit.
avatar
Ben R
LogarithmLover
LogarithmLover

Posts : 38
Points : 14
Reputation : 10
Join date : 2008-10-07
Age : 23
Location : [LOCATION YET TO BE CONFIRMED]

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Steve on Mon Oct 13, 2008 4:03 am

What kind of names are zillian and zillo? anyway i don't even get how to do the problem. I might try it later, but for now confused confused
avatar
Steve
The Cool Cube
The Cool Cube

Posts : 85
Points : 4
Reputation : 4
Join date : 2008-10-07
Age : 22
Location : ...here

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Mira Holford on Mon Oct 13, 2008 5:34 am

Steve wrote:What kind of names are zillian and zillo? anyway i don't even get how to do the problem. I might try it later, but for now confused confused

ya i know
avatar
Mira Holford
The Cool Cube
The Cool Cube

Posts : 94
Points : 0
Reputation : 0
Join date : 2008-10-07
Age : 32
Location : |~~~Here~~~|

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Steve on Mon Oct 13, 2008 8:48 pm

how do u do the poll thingy? confused
avatar
Steve
The Cool Cube
The Cool Cube

Posts : 85
Points : 4
Reputation : 4
Join date : 2008-10-07
Age : 22
Location : ...here

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Mira Holford on Tue Oct 14, 2008 12:53 am

idk but archis will come and tell us the answer
avatar
Mira Holford
The Cool Cube
The Cool Cube

Posts : 94
Points : 0
Reputation : 0
Join date : 2008-10-07
Age : 32
Location : |~~~Here~~~|

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Ben R on Tue Oct 14, 2008 1:57 am

When you post a new topic, if you scroll down, you'll see poll options. You can take it from there.
avatar
Ben R
LogarithmLover
LogarithmLover

Posts : 38
Points : 14
Reputation : 10
Join date : 2008-10-07
Age : 23
Location : [LOCATION YET TO BE CONFIRMED]

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Mira Holford on Tue Oct 14, 2008 3:59 am

Ben R wrote:When you post a new topic, if you scroll down, you'll see poll options. You can take it from there.





ohhhhhhhhhhhhhh
avatar
Mira Holford
The Cool Cube
The Cool Cube

Posts : 94
Points : 0
Reputation : 0
Join date : 2008-10-07
Age : 32
Location : |~~~Here~~~|

View user profile

Back to top Go down

Re: Zillian and Zillo

Post  Archis on Tue Dec 23, 2008 7:55 am

Archis wrote:Zillian tosses one penny and Zillo tosses two pennies. The probability that Zillo gets the same number of head that Zillian gets is what common fraction?

Probability is equal to # of successes/total possibilities. Note this is a very easy probability question if the successes is approached with proper casework.

Case I: They each throw 0 heads
Spoiler:

There is only 1 result that corresponds to this case
Zillo: TT
Zillian: T
Case II: They each throw 1 head
Spoiler:
.
There are two possible results

Zillo: HT, TH
Zillian: H

Combining both the results from Case I and II, you get 3 successes. In total there are 8 possibilities (3 coins are being tossed for 2*2*2.)

#successes/#possibilities = 3/8
avatar
Archis
Admin
Admin

Posts : 78
Points : 38
Reputation : 4
Join date : 2008-09-29

View user profile http://nysmithmath.forumotion.net

Back to top Go down

Re: Zillian and Zillo

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum