Turn on thread page Beta
    • Thread Starter
    Offline

    9
    ReputationRep:
    i need help on this question
    • Thread Starter
    Offline

    9
    ReputationRep:
    Name:  78.PNG
Views: 40
Size:  53.9 KB
    Offline

    9
    ReputationRep:
    (Original post by Official-21)
    Name:  78.PNG
Views: 40
Size:  53.9 KB
    Draw a Venn Diagram.
    Offline

    11
    ReputationRep:
    After drawing a venn digram work out the fractions and add them together
    Offline

    17
    ReputationRep:
    first get the total number of students, then just use a probability tree or table to find out what you want.
    • Thread Starter
    Offline

    9
    ReputationRep:
    never mind i got 19/28 i figured it out just after posting sorry anyway thanks
    • Thread Starter
    Offline

    9
    ReputationRep:
    Name:  85.PNG
Views: 33
Size:  59.7 KB
    Offline

    18
    ReputationRep:
    (Original post by Official-21)
    Name:  85.PNG
Views: 33
Size:  59.7 KB
    Do you need help?
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    9
    ReputationRep:
    yh
    Offline

    19
    ReputationRep:
    (Original post by Official-21)
    yh
    You know there are 20 outside the two sets so the total inside must be 100 - 20 = 80

    Add the three expressions up and put equal to 80 and solve.
    Offline

    18
    ReputationRep:
    (Original post by Muttley79)
    You know there are 20 outside the two sets so the total inside must be 100 - 20 = 80

    Add the three expressions up and put equal to 80 and solve.
    Addition to this, subtract 80 for both sides and factor the expression to solve for x. (Choose the positive value for x). Then it’s asking you to look at B interest T segment and the chance of getting a T will be
    Spoiler:
    Show
    x/3x
    substitute your value of x in 👍🏻
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    9
    ReputationRep:
    Name:  86.PNG
Views: 31
Size:  54.1 KBI get 27/55 as my answer simplified from 54/110
    Offline

    19
    ReputationRep:
    (Original post by Y11_Maths)
    ....
    Just give a hint - that's the rules in the maths forum
    Offline

    19
    ReputationRep:
    (Original post by Official-21)
    Name:  86.PNG
Views: 31
Size:  54.1 KBI get 27/55 as my answer simplified from 54/110
    Could you post your working?

    Draw a tree diagram ...
    Offline

    18
    ReputationRep:
    (Original post by Muttley79)
    Just give a hint - that's the rules in the maths forum
    My bad I get carried away I don’t know where to stop 😇
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    9
    ReputationRep:
    Name:  E67E6350-E04A-4297-9BDB-65067CB2714C.jpg.jpeg
Views: 30
Size:  17.4 KB
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    9
    ReputationRep:
    I put 19 on the second branch because the last sentence it says Another Marble is taken form the bag which made assume it is without replacement
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    18
    ReputationRep:
    (Original post by Official-21)
    I put 19 on the second branch because the last sentence it says Another Marble is taken form the bag which made assume it is without replacement
    It tells you that the marble was replaced before he took out the next marble so your fractions should still be out of 11
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    18
    ReputationRep:
    (Original post by Y11_Maths)
    It tells you that the marble was replaced before he took out the next marble so your fractions should still be out of 11
    Besides that your method is correct
    Posted on the TSR App. Download from Apple or Google Play
    • Thread Starter
    Offline

    9
    ReputationRep:
    does that not mean that it is without replacement as we dont know if she put it back or not
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 17, 2018

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?
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.