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30#
發表於 2012-3-7 02:59 PM
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The answer is 91
$ c# h" g6 J0 O; Y3 v3 J1 row 3x4+1x3=150 X+ _( Z8 ~+ c- i4 C0 ^
2 row 4x5+2x4=285.39.217.77:8898& P3 m) i" P3 m4 i9 r6 W
3 row 5x6+3x5=45
, ~: T- V' s/ J8 C5.39.217.77:88984 row 6x7+4x6=669 g/ Q* l! X. k% i) B6 \" v
5 row 7x8+5x7=91  |
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