Probability of AᴧBᴧBᴧC equal zero why 1

  • Thread starter Sadeq
  • Start date
107
0
probability of AᴧBᴧBᴧC equal zero why!!1

(B v AE)ᴧ( Ev C)
So after multiplication you should have
AᴧBᴧBᴧC
But he didnt mention this, so it should by zero ,but why!!!!!!!!!!!!!!11
 

chiro

Science Advisor
4,783
128
Re: probability of AᴧBᴧBᴧC equal zero why!!1

Hey Sadeq.

What does the E refer to?
 
107
0
Re: probability of AᴧBᴧBᴧC equal zero why!!1

All the symbol are probability of events
 

haruspex

Science Advisor
Homework Helper
Insights Author
Gold Member
2018 Award
31,982
4,748
Re: probability of AᴧBᴧBᴧC equal zero why!!1

Sadeq, several things need more explanation.
You have written AE with no symbol in between. What does this mean?
If A and B are probabilities, what does A v B mean? Surely they events, not the probabilities of the events?
On my device, the other symbol you use shows up as a square. Is this an AND symbol?
I don't understand the steps in your multiplication. What happened to E?
 
107
0
Re: probability of AᴧBᴧBᴧC equal zero why!!1

Im so sorry ,i was in hurry when i wrote this, so sorry
I upload the a picture for the problem ,when you look at the picture u will see, two yellow terms,which eventually will have to multiply them togethor,so all symbols will be in Intersection(4 symbols),
So my question why the answer is zero, since nothing come on the result from those terms
 

Attachments

haruspex

Science Advisor
Homework Helper
Insights Author
Gold Member
2018 Award
31,982
4,748
Re: probability of AᴧBᴧBᴧC equal zero why!!1

OK, I've read the attachment and it all makes sense, so long as the AND operation is defined as more binding than OR. So what is it you don't understand? What is it that appears to be zero?
 
107
0
Re: probability of AᴧBᴧBᴧC equal zero why!!1

AᴧEᴧC= disappear from answer
Why
 

haruspex

Science Advisor
Homework Helper
Insights Author
Gold Member
2018 Award
31,982
4,748
Re: probability of AᴧBᴧBᴧC equal zero why!!1

Becausd it is subsumed by A & C. In general, X v (X & Y) = X.
 
107
0
Re: probability of AᴧBᴧBᴧC equal zero why!!1

could u please explain a little bit more please
im sorry i took a lot from your time
 

haruspex

Science Advisor
Homework Helper
Insights Author
Gold Member
2018 Award
31,982
4,748
Re: probability of AᴧBᴧBᴧC equal zero why!!1

In the expression X v (X & Y):
Suppose X is true. Then the whole expression is true.
Suppose X is false. Then both sides of the OR are false, so the expression is false.
Therefore the expression is equivalent to just X.
Likewise, X & (X v Y) reduces to X.
 
107
0
Re: probability of AᴧBᴧBᴧC equal zero why!!1

More than thank you
U are the best
Thank you again
 

Related Threads for: Probability of AᴧBᴧBᴧC equal zero why 1

  • Last Post
Replies
18
Views
26K
  • Last Post
Replies
11
Views
11K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
9
Views
4K
  • Last Post
Replies
16
Views
1K
  • Last Post
Replies
2
Views
3K
  • Last Post
Replies
3
Views
12K
Replies
96
Views
6K

Hot Threads

Top