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3235 is composite. You can easily tell because it ends in a 5, which means it is divisible by 5.
3235/5=647


A number is always composite if it ends in a 5 or a 0 (with the exception of 5 itself) because either of those means that it is divisible by 5.
Any number that has 5 or 0 in its one's place is divisible by 5, so 3235 is divisible by 5.

Since it has another factor in addition to '1' and itself, it's a composite number.

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10y ago

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