问题
解答题
|
答案
+1 2
+3+4+1 2
+3+4+…+1 2
+3+4+…+101 2
=
×8+7×3+7×4+6×5+5×6+4×7+3×8+2×9+101 2
=4+21+28+30+30+28+24+18+10
=200.
故答案为:200.
|
+1 2
+3+4+1 2
+3+4+…+1 2
+3+4+…+101 2
=
×8+7×3+7×4+6×5+5×6+4×7+3×8+2×9+101 2
=4+21+28+30+30+28+24+18+10
=200.
故答案为:200.