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Secondary 1 | Maths
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Prateek
Prateek

Secondary 1 chevron_right Maths chevron_right Singapore

Ummm am i done with this question or is there something that i am missing

Date Posted: 3 years ago
Views: 200

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Arnold K H Tan
Arnold K H Tan's answer
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Eric Nicholas K
Eric Nicholas K
3 years ago
Using the middle number as an even integer x is more straightforward.

Sum of numbers
= (x - 2) + x + (x + 2)
= x - 2 + x + x + 2
= 3x

which contains a multiplier 3 and therefore the sum is divisible by 3.