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To check if
is divisible by 3, you simply need to add together all the digits. So,
. Now, since
is not divisible by 3,
is also not divisible by 3.
A fun tip: the divisibility rule for 3 can save you from long division! Just remember, if the sum of the digits isn’t a multiple of 3, then the whole number isn’t either. Grab some digits, do a quick sum, and you’re golden!