Hey there! Sign in to join this conversationNew here? Join for free
 You are Here: Home >< Maths

# What are the odds? P Watch

1. Im trying to work out the chances of these events cashing ilk try and explain the problem.

Both events happen within the same 20 day window. Both events take half a day however event A can only happen in the morning where as event B can also take place in the afternoon.

Event A has three occurances
Event B has six occurances

Each occurance requires its own slot(event B cant happen twice at the same time)

What are the odds that events A and B clash?
2. (Original post by skeptical_john)
Im trying to work out the chances of these events cashing ilk try and explain the problem.

Both events happen within the same 20 day window. Both events take half a day however event A can only happen in the morning where as event B can also take place in the afternoon.

Event A has three occurances
Event B has six occurances

Each occurance requires its own slot(event B cant happen twice at the same time)

What are the odds that events A and B clash?
What have you tried?
3. (Original post by RDKGames)
What have you tried?

I've tried it using the back of a fag packet maths but dont have much faith in my workings. Came out to about 60% of no clash.
4. Event A can happen any three of the 20 days and does not matter when.

So chance of event B not clashing is

37/40 * 36/39 * 35/38 * 34/37 * 33/36 * 32/35 which is about 60%

Reply
Submit reply
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:
Updated: September 14, 2016
Today on TSR

### Last-minute PS help

100s of personal statements examples here

### More pressure for kinky sex?

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

## Make your revision easier

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

Can you help? Study help unanswered threads

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• 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

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