You are Here: Home >< Maths

# D1 Matchings

Announcements Posted on
Last day to win £100 of Amazon vouchers - don't miss out! Take our quick survey to enter 24-10-2016
1. http://filestore.aqa.org.uk/subjects...1-QP-JAN12.PDF

For question 2 b) of this paper, I don't know basically.

Could someone walk me through the logic behind why a complete matching is possible ( in a way that gets you the marks)

thanks
2. (Original post by hi-zen-berg)

For question 2 b) of this paper, I don't know basically.

Could someone walk me through the logic behind why a complete matching is possible ( in a way that gets you the marks)

thanks
A complete matching isn't possible.

Consider D must match with 3, and D must match with 4.
But D can't match with both 3 and 4, so a complete matching is impossible.
3. (Original post by ghostwalker)
A complete matching isn't possible.

Consider D must match with 3, and D must match with 4.
But D can't match with both 3 and 4, so a complete matching is impossible.
cheers;

so do you think a good way to answers these Qs in a succinct way would be;

to look for a vertex (LHS) that can only match to one other (RHS)

therefore another vertex (LHS) has only one vertex it can now connect to (RHS)

and so on, until there are two unmatched vertices one side and one unmatched on the opposite side

you don't have to reply i was basically mapping it out in my own head looool

thanks again

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: June 20, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams