偶数

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((ǒu )(shù )(ǒu )(shù ))

(néng )(bèi )2(zhěng )(chú )(de )(zhěng )(shù )()+2,-2,+4,-4。(zhèng )(ǒu )(shù )()(chēng )(shuāng )(shù )”。

(ā )(yīng )《<(chá )()(ěr )(chuāng )(huā )()()》:“(zhòng )(shì )(ǒu )(shù )(de )(zhuāng )(shì )(pǐn )(zhù )(zhòng )(duì )(chēng )(de )(xíng )(shì )(zhè )(tóng )(yàng )(shì )(chuāng )(huā )(de )()()()(zhēng )。”()(chí )()()()()(cāi )(xiǎng )(sān ):“()()()(èr )(nián )()()()()()(xiàn )(měi )()()()(ǒu )(shù )(dōu )()()(xiě )(chéng )(liǎng )()()(shù )(de )()。”

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