New Posts For Thread: I cant do this maths questionhttps://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question10 Balls in a Bag, numbered 1,2,3,4....to 10 You draw 4 balls at random, unseen.What is the probability that neither number 1 or number 2 (or any two specific numbers if you like) get drawn out.yes it's 1/3 - as they said hours ago :)https://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902178#417902178yes it's 1/3 - as they said hours ago :)Sat, 19 Dec 2009 09:27:19 -0600NP Sterile. You can put your house on those figures.https://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902174#417902174NP Sterile. You can put your house on those figures.Sat, 19 Dec 2009 09:25:21 -0600oh fook - read the question Ifor :(https://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902170#417902170oh fook - read the question Ifor :(Sat, 19 Dec 2009 09:25:12 -0600Try again Ivor - you can't fkn read :Dhttps://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902166#417902166Try again Ivor - you can't fkn read :DSat, 19 Dec 2009 09:24:20 -0600nice one Journeymanhttps://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902158#417902158nice one JourneymanSat, 19 Dec 2009 09:23:05 -0600try again Journey - first ball one is unwanted, NINE are wantedhttps://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902154#417902154try again Journey - first ball one is unwanted, NINE are wantedSat, 19 Dec 2009 09:22:50 -0600Here's my Rachel Riley style breakdown.The probability of 1st ball drawn not being one of the numbers is 80%The probability of 2nd ball drawn not being one of the numbers is 77.77%The probability of 3rd ball drawn not being one of the numbers is 75%Thttps://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902102#417902102Here's my Rachel Riley style breakdown.The probability of 1st ball drawn not being one of the numbers is 80%The probability of 2nd ball drawn not being one of the numbers is 77.77%The probability of 3rd ball drawn not being one of the numbers is 75%TSat, 19 Dec 2009 09:08:12 -0600First ball drawn not 1 of 2 ..... 8/10A start...https://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902086#417902086First ball drawn not 1 of 2 ..... 8/10A start...Sat, 19 Dec 2009 09:05:59 -06001/3 exactly if i'm not mistaken.8/10 * 7/9 * 6/8 * 5/7https://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902082#4179020821/3 exactly if i'm not mistaken.8/10 * 7/9 * 6/8 * 5/7Sat, 19 Dec 2009 09:05:03 -0600exactly one in threeMy NAP answer.https://community.betfair.com/chit_chat/go/thread/view/94038/23425230/i-cant-do-this-maths-question?post_id=417902074#417902074exactly one in threeMy NAP answer.Sat, 19 Dec 2009 09:02:11 -0600