2014-03-15
展开全部
用6,6,7,9算24点共有18种算法:
6×[﹙7+6﹚-9]
﹙9-7﹚×﹙6+6﹚
6×[﹙6-9﹚+7]
[7-﹙9-6﹚]×6
6×[6+﹙7-9﹚]
[6+﹙7-9﹚]×6
[7+﹙6-9﹚]×6
[﹙6+7﹚-9]×6
[﹙7-9﹚+6]×6
6×[6-﹙9-7﹚]
6×[﹙7-9﹚+6]
[6-﹙9-7﹚]×6
﹙6+6﹚×﹙9-7﹚
[﹙7+6﹚-9]×6
6×[7-﹙9-6﹚]
6×[﹙6+7﹚-9]
6×[7+﹙6-9﹚]
[﹙6-9﹚+7]×6
6×[﹙7+6﹚-9]
﹙9-7﹚×﹙6+6﹚
6×[﹙6-9﹚+7]
[7-﹙9-6﹚]×6
6×[6+﹙7-9﹚]
[6+﹙7-9﹚]×6
[7+﹙6-9﹚]×6
[﹙6+7﹚-9]×6
[﹙7-9﹚+6]×6
6×[6-﹙9-7﹚]
6×[﹙7-9﹚+6]
[6-﹙9-7﹚]×6
﹙6+6﹚×﹙9-7﹚
[﹙7+6﹚-9]×6
6×[7-﹙9-6﹚]
6×[﹙6+7﹚-9]
6×[7+﹙6-9﹚]
[﹙6-9﹚+7]×6
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