(1-
1
2
)×(1-
1
3
)×(1-
1
4
)×…×(1-
1
100
分析:把每個括號內(nèi)的結(jié)果先求出來,然后通過約分簡算,即可得出結(jié)果.
解答:解:(1-
1
2
)×(1-
1
3
)×(1-
1
4
)×…×(1-
1
100
),
=
1
2
×
2
3
×
3
4
×…×
99
100
,
=
1
100
點(diǎn)評:仔細(xì)觀察,選擇合適的方法解答.
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