Hello, can any "smart" person who is very good at math solve this question? it is (d) in the attachment.... good luck thanks
Last edited by igcsestudent; May 14th 2011 at 09:31 AM.
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is defined by so You could multiply both of those out and subtract but it is simpler to notice that each has factors of 1/6, n, and n+1 andfactor those out:
Originally Posted by igcsestudent Hello, can any "smart" person who is very good at math solve this question? it is (d) in the attachment.... good luck thanks sequence 1,4,10,20,35 Find nextterm Differences 3,6,10, 15, next difference is 21 6 comes after 3,4,5 35+21 is 56 bjh
cool! thanks really appreciate your help!
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