3,3,7,7怎樣合24?

2006-11-16 5:16 am
3,3,7,7

回答 (2)

2006-11-17 2:24 am
(3+3/7)*7
2006-11-16 6:09 am
7x[3+(3/7)]

=7x3+3/7

=21+21/7

=21+3

=24
參考: me


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