问题
解答题
|
答案
分子=(1+99)×[(99-1)÷2+1]÷2
=100×[98÷2+1]÷2,
=100×[49+1]÷2,
=100×50÷2,
=2500;
分母=(100+2)×[(100-2)÷2+1]÷2,
=102×[98÷2+1]÷2,
=102×[49+1]÷2,
=102×50÷2,
=2550;
原式=
=2500 2550
.50 51
|
分子=(1+99)×[(99-1)÷2+1]÷2
=100×[98÷2+1]÷2,
=100×[49+1]÷2,
=100×50÷2,
=2500;
分母=(100+2)×[(100-2)÷2+1]÷2,
=102×[98÷2+1]÷2,
=102×[49+1]÷2,
=102×50÷2,
=2550;
原式=
=2500 2550
.50 51