问题
解答题
(1+
|
答案
(1+
)+(2+1 97
)+(3+2 97
)+…+(96+3 97
)+(97+96 97
),97 97
=1+2+3+…+96+97+(
+1 97
+2 97
+…+3 97
+96 97
),97 97
=(1+97)×97÷2+[(1+97)×97÷2×
],1 97
=4753+[4753×
],1 97
=4753+49,
=4802.