è¥é¿æ¹å½¢ä¸º2*3
设第ä¸ä¸ªæ°ä¸ºxï¼åä¾æ¬¡ä¸ºx+1,x+2,x+7,x+8,x+9
æ以x+x+1+x+2+x+7+x+8+x+9=6x+27=69
6x=42
x=7
æ以åå«ä¸º7,8,9,14,15,16
è¥é¿æ¹å½¢ä¸º3*2
设第ä¸ä¸ªæ°ä¸ºxï¼åä¾æ¬¡ä¸ºx+1,x+7,x+8,x+14,x+15
æ以x+x+1+x+7+x+8+x+14+x+15=6x+45=69
6x=24
x=4
æ以åå«ä¸º:4,5,11,12,18,19
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