问题
填空题
计算:
|
答案
1
+22 3
+33 4
+…+19944 5
+19951995 1996 1996 1997 3
+51 3
+72 4
+…+39893 5
+39911994 1996 1995 1997
=(2-
)+(3-1 3
)+(4-1 4
)++(1995-1 5
)+(1996-1 1996
)1 1997 (4-
)+(6-2 3
)+(8-2 4
)++(3990-2 5
)+(3992-2 1996
)2 1997
=
.1 2
故答案为:
.1 2