計數題-答案=99

2007-11-27 9:26 pm
大家知唔知如果要用晒加減乘除既方法於 #1-9 (不可重覆用數字).而答案又要係99 .
點計呀??急急急!

回答 (3)

2007-11-27 9:44 pm
✔ 最佳答案
可以重覆加減乘除的話9x8-7除1+(6x4)+(5x2)

=72-7除1+24+10

=65除1+24+(5x2)

=65+24+10

=89+10

=99
2007-11-27 11:09 pm
(517 - 486 + 2) x 9 / 3 = 99
參考: my math. knowledge
2007-11-27 9:36 pm
9*8+7+6+5+4+3+2


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