题目内容
计算.(1-
)×(1-
)×(1-
)×…×(1-
)×(1-
)
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 99 |
| 1 |
| 100 |
分析:分别算出小括号里面的减法,然后再相邻的两个数进行约分求解.
解答:解:(1-
)×(1-
)×(1-
)×…×(1-
)×(1-
),
=
×
×
×…×…
×
,
=
.
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 99 |
| 1 |
| 100 |
=
| 1 |
| 2 |
| 2 |
| 3 |
| 3 |
| 4 |
| 98 |
| 99 |
| 99 |
| 100 |
=
| 1 |
| 100 |
点评:本题主要根据因数之间分子和分母约分的方法求解.
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