Turn on thread page Beta
    • Thread Starter
    Offline

    2
    ReputationRep:
    I am only able to do part A (720 I hope). For part c I think it may be 6 choose 2 which is 15. Could I have some help on the other parts(and part a and c if these are the wrong answers)?
    Attached Images
     
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by John Flores)
    I am only able to do part A (720 I hope). For part c I think it may be 6 choose 2 which is 15. Could I have some help on the other parts(and part a and c if these are the wrong answers)?
    Anyone?
    Offline

    17
    ReputationRep:
    Part b- what is the probability he gets ferrari? As each race is independent then u can do this probability to the power of 10
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    14
    ReputationRep:
    (Original post by John Flores)
    I am only able to do part A (720 I hope). For part c I think it may be 6 choose 2 which is 15. Could I have some help on the other parts(and part a and c if these are the wrong answers)?
    For part c, the answer is 15, but it is not obtained through using 6C2; it just happens that for this case that the answer is equal to 6C2.

    There are 6C2 ways of picking the first pair, and then 4C2 ways of picking the second pair, and then 2C2 ways of picking the third pair. Note however that when multiplying these all together, the same teams in different orders, namely 3! times, will occur. So we actually get 6C2* 4C2 * 2C2 / 3! = 15
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 19, 2017

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.