Nth term, GCSE Higher Question

by Rakiya
(Editor)

Circles higher GCSE Question, Nth terms

Circles higher GCSE Question, Nth terms




Hello everyone,

Here is a Higher GCSE nth term type of question for you all to try.

Have a go!

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Nov 11, 2011
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solution
by: Anonymous

the first term is 2

Nov 10, 2011
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Answer to Nth term GCSE HIgher Question
by: Rakiya

..., 12, 52, ...

To find a:

(12-a)×4=52

12-a=52/4

-a=13-12

a=-1




Check:

When n=3

12-(-1)×4=52....correct




To find n=1

n-(-1)×4=12

n+1=3

n=2




Check

when n=2

2-(-1)×4=12....correct

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Nov 10, 2011
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Solution
by: Bodders!

sequence goes 4.4, 12, 52, 416

a=10^(n-2)

ie formula for the nth term is 4(n+10^(n-2))

Nov 10, 2011
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answering Question
by: Mohammed

the Question ask about finding the first term in this sequence: ...,12,52

i followed the rule of this sequence:
4*2=8
and 12-8=4
so the first term is 2

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