IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: shahtaj on May 15, 2011, 01:08:06 pm

Title: help needed.
Post by: shahtaj on May 15, 2011, 01:08:06 pm

http://www.xtremepapers.me/CIE/Cambridge%20IGCSE/0580%20-%20Mathematics/0580_s09_qp_4.pdf

page 18 c) i)

im having problems in sequence questions :/

Title: Re: help needed.
Post by: NotAbod on May 15, 2011, 01:15:36 pm

replace n with any term, use first or second or anyone, doesnt matter.
i will choose the second term

3 = 2(2+1)/k
k = 6/3
k = 2.

or with the third term
6 = 3(3+1)/k
k = 12/6
k = 2

Title: Re: help needed.
Post by: SauD~ on May 15, 2011, 01:17:28 pm

ABod i was about to say that.. :P

Shahtaj try understanding question because they are mostly twisted and if you don't then it won't be good :)

Title: Re: help needed.
Post by: NotAbod on May 15, 2011, 01:18:39 pm

Quote from: $~SauD~$ on May 15, 2011, 01:17:28 pm

ABod i was about to say that.. :P

Shahtaj try understanding question because they are mostly twisted and if you don't then it won't be good :)

this question had nothing to do with sequence actually.
its all about algebra and substituting values.

Title: Re: help needed.
Post by: SauD~ on May 15, 2011, 01:19:48 pm

Quote from: AboD on May 15, 2011, 01:18:39 pm

this question had nothing to do with sequence actually.
its all about algebra and substituting values.

Yupz exactly ;)