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I need help

Box contains 10 pins 3 are blue and 7 are green two pins are randomly taken out out of the box without replacement work out the probability that both pins are the same colour

Reply 1

miagracejoy

The answer should be 8/15 or 0.6. Reply if you need working out or an explanation as well.

Reply 2

davros

Original post by willethwombat

Hence P(g).P(g) or P(b).P(b) =

Original post by miagracejoy

The answer should be . Reply if you need working out or an explanation as well.

Please don't post solutions - it's against the rules of the forum! Thanks :smile:

draw tree diagrams.

Original post by davros

Please don't post solutions - it's against the rules of the forum! Thanks :smile:

UMM how is it against the rules tho? Then what's the point of the student room?

Reply 5

username4838152

Original post by vidi2020

UMM how is it against the rules tho? Then what's the point of the student room?

My thoughts exactly i thought the student room was for help? I mean this is like homework i am assuming?

Reply 6

davros

Original post by vidi2020

UMM how is it against the rules tho? Then what's the point of the student room?

Original post by something_orphic

My thoughts exactly i thought the student room was for help? I mean this is like homework i am assuming?

It's NOT a "do my homework" service!

Please read the sticky post at the top of the Maths forum which explains how posters should ask questions, and the best way for people to help them, (via hints and guidance).

Thanks :smile:

Reply 7

username4838152

Original post by davros

Thank you for explaining :smile:

Reply 8

username3477548

Original post by vidi2020

EXACTLY LMAO

Errrrr buddy idk who you are but no one got banned for helping people with their homework so CHILL. Also did this post mention 'do my homework'?

don't be rude
he's just stating the rules of the forum

Reply 9

davros

Original post by vidi2020

EXACTLY LMAO

Errrrr buddy idk who you are but no one got banned for helping people with their homework so CHILL. Also did this post mention 'do my homework'?

If you persistently ignore requests to follow the rules, then your post may get reported and your account suspended by the mods of this forum.

I'm just giving you a friendly warning before somebody else jumps in and reports you :smile:

Reply 10

username4838152

"The maths forum is not a place to get your homework done for you; instead of providing full solutions, we will point you in the right direction on a question so that you can reach the solution yourself and hopefully help you understand the underlying concepts better in the process, which will turn out much more useful for you in the end!"

This is what it says under the sticky thing.

(edited 3 years ago)

Reply 11

davros

Original post by something_orphic

Thank you for explaining :smile:

No probs.

We all want to help here, and we're all volunteers giving up our free time to do it. Most people can get to the end of a problem with a few nudges in the right direction but if we just dish out the answers they don't learn anything and just come back for the same sort of help a week later!