Turn on thread page Beta
 You are Here: Home >< Chat >< Chat

# If there are 6 apples and you take away 4, how many do you have? watch

1. (Original post by _icecream)
10² - 10 - 90 = 0So if Hannah has 10 sweets she has a 6/10 chance of pulling out an orange sweet first time and then a 5/9 chance of pulling one out second time.6/10 X 5/9 = 30/90 or 1/3
Duh
2. 6 apples minus 4
(you cannot subtract 4 from 6 apples)
3. 4 apples and some very hard poop
4. Questions like this absolutely send my brain cells everywhere.
5. lots of applessssssssssssss
6. (Original post by TeeEm)
6 apples minus 4
(you cannot subtract 4 from 6 apples)
Smart lol
7. (Original post by LemonadeAspire)
Smart lol
I have to have a PhD ...
That was my thesis ... On completion I even called a press conference.
8. (Original post by _icecream)
10² - 10 - 90 = 0So if Hannah has 10 sweets she has a 6/10 chance of pulling out an orange sweet first time and then a 5/9 chance of pulling one out second time.6/10 X 5/9 = 30/90 or 1/3
That's trial and error, that's not how you solve the problem. If there are n sweets in a bag, 6 of which are orange then the probability of picking an orange is simply 6/n. To pick another orange sweet would now be 6/n* 5/n-1 because there are now n-1 sweets in the bag and 5 orange sweets and this equals 1/3.
6/n * 5/n-1 =1/3
30/n^2-n=1/3
90/n^2-n=1
90=n^2-n therefore : n^2-n-90=0.
9. A police caution for petty theft?
10. 4 apples

Reply
Submit reply
Turn on thread page Beta
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: February 24, 2016
Today on TSR

### He lied about his age

Thought he was 19... really he's 14

Poll
Useful resources

### Ask the Community Team

Got a question about the site content or our moderation? Ask here.

### Welcome Lounge

We're a friendly bunch. Post here if you're new to TSR.

## 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.