【cy940756】評論
已知 7×11×13×15×19=285285,則 (-3 )×(-5 )×(-7 )×(-19 )×(-22 )×(-25 )×(-26 )=(-3 )×(-5 )×(-7 )×(-19 )×(-22 )×(-25 )×(-26 )=(-3 )×(-5 )×(-7 )×(-19 )×(-11x2 )×(-5x5 )×(-13x2 )=-(3x5x7x19x11x2x5x5x13x2)=-(15x7x19x11x2x5x5x13x2) =-(7x11x13x15x19x2x5x5x2)=-(285285x100)=-28528500答案選項c