New Posts For Thread: Another maths questionhttps://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-questionIf something grows from £620 in year 1 to £810 in year 5, how do I work out the average annual growth in percentage?I thought it was 810/620 then cube root it, but that's wrong.Many thanks for any help.Thanks a lot, I've just been using my calculator wrong..... I can do it now. I think I was doing square root and times by 4, thinking I was doing quadruple root. Thank you very much indeed both of you, very helpful.https://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520785295#520785295Thanks a lot, I've just been using my calculator wrong..... I can do it now. I think I was doing square root and times by 4, thinking I was doing quadruple root. Thank you very much indeed both of you, very helpful.Wed, 13 Jun 2012 13:48:20 -0500^ to means to the power, ie squared (^2), cubed (^3), ^1/4 is what you're referring to when you say quadruple root. There should be a button on your calculator y(root sign)xhttps://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520783309#520783309^ to means to the power, ie squared (^2), cubed (^3), ^1/4 is what you're referring to when you say quadruple root. There should be a button on your calculator y(root sign)xWed, 13 Jun 2012 12:57:39 -0500Sorry I meant quadruple root. JLivermore, that's the right answer (6.9%) but what does the ^ symbol mean? (and more importantly how do I do it on my calculator.Many thanks indeed - betfair forum has become the place to go for maths help!https://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520782683#520782683Sorry I meant quadruple root. JLivermore, that's the right answer (6.9%) but what does the ^ symbol mean? (and more importantly how do I do it on my calculator.Many thanks indeed - betfair forum has become the place to go for maths help!Wed, 13 Jun 2012 12:40:15 -0500actually... i was assuming end year 1 to end year 5... (so 4 years)... you probably mean start year 1 to end year 5, in which case change the 1/4 to a 1/5https://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520782199#520782199actually... i was assuming end year 1 to end year 5... (so 4 years)... you probably mean start year 1 to end year 5, in which case change the 1/4 to a 1/5Wed, 13 Jun 2012 12:28:33 -0500(810/620)^(1/4) - 1*100=6.9%https://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520782157#520782157(810/620)^(1/4) - 1*100=6.9%Wed, 13 Jun 2012 12:27:22 -0500Why cube root? You've got 4 years of growth there not 3https://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520781663#520781663Why cube root? You've got 4 years of growth there not 3Wed, 13 Jun 2012 12:13:45 -0500If something grows from £620 in year 1 to £810 in year 5, how do I work out the average annual growth in percentage?I thought it was 810/620 then cube root it, but that's wrong.Many thanks for any help.https://community.betfair.com/general_betting/go/thread/view/94082/29176247/another-maths-question?post_id=520781063#520781063If something grows from £620 in year 1 to £810 in year 5, how do I work out the average annual growth in percentage?I thought it was 810/620 then cube root it, but that's wrong.Many thanks for any help.Wed, 13 Jun 2012 11:55:52 -0500