芭莎网礼品册:1+2+3+4+5+6....................+1000000=???
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麻烦解这到题的人把怎么解的告诉我
(1+1000000)*1000000/2=500000500000
(1+1000000)×1000000/2
(1+1000000)*100000/2=
(1+1000000)*100000/2
(1+1000000)*1000000/2=500000500000
(1+1000000)×1000000/2
(1+1000000)*100000/2=
(1+1000000)*100000/2