(1+1/97)+(2+2/97)+(3+3/97)+…+(96+96/97)+(97+97/97).(数学)
(1+
197
)+(2+
297
)+(3+
397
)+…+(96+
9697
)+(97+
9797
),
=1+2+3+…+96+97+(
197
+
297
+
397
+…+
9697
+
9797
),
=(1+97)×97÷2+[(1+97)×97÷2×
197
],
=4753+[4753×
197
],
=4753+49,
=4802.

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