1+1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512=

问题描述:

1+

1
2
+
1
4
+
1
8
+
1
16
+
1
32
+
1
64
+
1
128
+
1
256
+
1
512
=

1+

1
2
+
1
4
+
1
8
+
1
16
+
1
32
+
1
64
+
1
128
+
1
256
+
1
512

=1+1-
1
2
+
1
2
-
1
4
+
1
4
-
1
8
+
1
8
-
1
16
+…+
1
128
-
1
256
+
1
256
-
1
512

=2-
1
512

=1
511
512