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(1+17)×(1+
17
2
)×(1+
17
3
)×…×(1+
17
18
)×(1+
17
19
)
(1+19)×(1+
19
2
)×(1+
19
3
)×…×(1+
19
16
)×(1+
19
17
)
=______．
人气：389 ℃　时间：2019-08-19 10:37:27
解答
(1+17)×(1+
17
2
)×(1+
17
3
)×…×(1+
17
18
)×(1+
17
19
)
(1+19)×(1+
19
2
)×(1+
19
3
)×…×(1+
19
16
)×(1+
19
17
)

=
18×
19
2
×
20
3
×…×
35
18
×
36
19
20×
21
2
×
22
3
×…×
35
16
×
36
17

=
136
231

故答案为：
136
231
．
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