Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    5
    ReputationRep:
    is P(A∩B') the same as P'(B∩A)
    • Study Helper
    Offline

    15
    Study Helper
    (Original post by youreanutter)
    is P(A∩B') the same as P'(B∩A)
    No, " P' " has no meaning.

    If you meant another combination of A and B, then you may find a Venn diagram useful.
    • Thread Starter
    Offline

    5
    ReputationRep:
    (Original post by ghostwalker)
    No, " P' " has no meaning.

    If you meant another combination of A and B, then you may find a Venn diagram useful.
    ??
    Offline

    2
    ReputationRep:
    (Original post by youreanutter)
    is P(A∩B' the same as P'(B∩A)
    P(A∩B') means those elements which are in A and not B.

    Consider the experiment of rolling a die.
    Let A be the event 'getting a prime number' , B be the event ' getting an odd number' . So,
    A= {2,3,5}
    B= {1,3,5}

    So, A∩B' will be {2}
    and P (A∩B') will be equal to 1/6.

    (A∩B) = {3,5}
    (A∩B)' = {1,2,4,6}
    So, P(A∩B)' = 4/6

    So, these 2 are not same.

    Let me know if there is any confusion now.
    • Thread Starter
    Offline

    5
    ReputationRep:
    (Original post by skalra)
    P(A∩B' means those elements which are in A and not B.

    Consider the experiment of rolling a die.
    Let A be the event 'getting a prime number' , B be the event ' getting an odd number' . So,
    A= {2,3,5}
    B= {1,3,5}

    So, A∩B' will be {2}
    and P (A∩B' will be equal to 1/6.

    (A∩B) = {3,5}
    (A∩B)' = {1,2,4,6}
    So, P(A∩B)' = 4/6

    So, these 2 are not same.

    Let me know if there is any confusion now.
    thanks that helped a lot
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: December 13, 2015
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.