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因為是五個連續的自然數的和,所以這個數位一定能被5整除 所以個位數位一定是5或0 又他們的和可以表示成兩個都大於5的連續奇數的積, 所以個位數位不是0,只能是5 所以最小的和是13*15=195 所以5個數位分別是37.28.39.40.41 所以最小數位是37
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