(-1)×2×(-3)×4×···×(-49)×50/2×4×6×···×100
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解:(-1)×2×(-3)×4×···×(-49)×50/2×4×6×···×100
=【(-1)^25×(1×2×3×4×···×49×50)】/【2^25×(1×2×3×4×···×49×50)】
=-(1/2^25)
=-1/33554432
=【(-1)^25×(1×2×3×4×···×49×50)】/【2^25×(1×2×3×4×···×49×50)】
=-(1/2^25)
=-1/33554432
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(-1)×2×(-3)×4×···×(-49)×50/2×4×6×···×100
= [(-1)/2] x 2/4 x [(-3)/6] x 4/8 x [(-5)/10] x ..... x [(-49)/98] x 50/100
= (-1)^25 x (1/2)^50
= -1 x 1/2^50
= -1/1125899906842624
= [(-1)/2] x 2/4 x [(-3)/6] x 4/8 x [(-5)/10] x ..... x [(-49)/98] x 50/100
= (-1)^25 x (1/2)^50
= -1 x 1/2^50
= -1/1125899906842624
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