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30#
發表於 2012-3-7 02:59 PM
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The answer is 91
* B* h3 h9 V. m* I3 Z5.39.217.761 row 3x4+1x3=15- x( ~ Q( @$ ~# B6 [3 M
2 row 4x5+2x4=28
9 r. ?5 O6 Q. W% F8 y% r3 row 5x6+3x5=45
* C. w: d; D, K T公仔箱論壇4 row 6x7+4x6=66公仔箱論壇" A7 W& S4 n1 o4 Y' ?
5 row 7x8+5x7=91  |
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