(−1)×2×(−3)×4×…×(−49)×50×(−2)50 |
2×4×6×…×100 |
(−1)×2×(−3)×4×…×(−49)×50×(−2)50 |
2×4×6×…×100 |
1×2×3×4×…×50×250 |
1×2×3×4×…×50×250 |
1×2×3×4×…×50×250 |
1×2×3×4×…×50×250 |
有理数的混合运算.
考查了有理数的混合运算,解题的关键是将式子变形为-
.1×2×3×4×…×50×250 1×2×3×4×…×50×250
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