## Question

primary 5 | Maths | Whole Numbers

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##### Leow Wen Ze

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Hi, how to solve 15c? Thank u

Date Posted: 5 months ago
Views: 51

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1st
By finding out the general term alone,you can find It's figure or square units easily and this works with all qn that has a pattern (n-1)..Hope it helps..
Date Posted: 5 months ago
Leow Wen Ze
5 months ago
From 1+ 4( n-1)
Why (n-1)?
5 months ago
Hmm..My explanation may not be 100% accurate but I'll try anyways..Why is it n-1? Well,(n-1) is just an expression and when you add it to the first (figure) term,1 in this case,you'll get a formula that represent all figures that is to come after the first figure..This helps to find the value of any figure and beyond..The n is actually the figure..So when you substitute any figure to n,the value of any figure is determined right away...Only add k(n-1) where k is the constant value if there is a constant increase in every figure..For example,increase of 4,multiply 4 with (n-1) and add the first figure's random value as well..Hope I answered your qn..:)
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The normal way to find your nth term formula rather than using a calculator(another shortcut)..Call this magic (or whatever you like)..Hope it helps.. :)
Date Posted: 5 months ago
Leow Wen Ze
5 months ago
Thank you
5 months ago
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