數學 Math

2008-04-21 9:14 pm

(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30)*2*3*4*5*6*7*8*9*10=??????????????????

回答 (3)

2008-04-21 11:13 pm

(1+30)x30/2=1+到30=465

456再x2x3x4x5x6x7x8x9x10=無公式=1687392000

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2008-04-21 9:21 pm

(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30)*2*3*4*5*6*7*8*9*10
=1632960000

2008-04-29 23:01:15 補充：
excel 計的

參考: me

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2008-04-21 9:16 pm

(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30)*2*3*4*5*6*7*8*9*10=
1687392000

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