Boy Mow Chau's answer to farhan sadik's Junior College 1 H2 Maths Singapore question.
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a quick way to show this result is to use Modular Arithmetic
since this is posted as a H2 Maths question, then a slightly longer way, involving concepts taught in H2 Maths, is to use binomial expansion.
note that any number that is divisible by 9, is automatically divisible to 3.
since this is posted as a H2 Maths question, then a slightly longer way, involving concepts taught in H2 Maths, is to use binomial expansion.
note that any number that is divisible by 9, is automatically divisible to 3.
Date Posted:
4 years ago
Thank you very much
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