一個(gè)質(zhì)數(shù)的3倍與另一個(gè)質(zhì)數(shù)的兩倍之和是100,這兩個(gè)質(zhì)數(shù)的的乘積是多少?
一個(gè)質(zhì)數(shù)的3倍與另一個(gè)質(zhì)數(shù)的兩倍之和是100,這兩個(gè)質(zhì)數(shù)的的乘積是多少?
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數(shù)學(xué)人氣：166 ℃時(shí)間：2020-01-29 02:49:47
優(yōu)質(zhì)解答
因?yàn)?第一個(gè)質(zhì)數(shù)的3倍和二個(gè)質(zhì)數(shù)的2倍的和是100,100是偶數(shù),第二個(gè)質(zhì)數(shù)的2倍也是偶數(shù)（偶數(shù)只有加上偶數(shù)才等于偶數(shù)）,所以第一個(gè)質(zhì)數(shù)的3倍也應(yīng)該是偶數(shù).（奇數(shù)與偶數(shù)的積才等于偶數(shù)）所以第一個(gè)質(zhì)數(shù)為偶質(zhì)數(shù).為2,后面的自己做……
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