1/2-1/4-1/8-1/16-1/32-1/64=_.

问题描述:

1
2
-
1
4
-
1
8
-
1
16
-
1
32
-
1
64
=______.

1
2
-
1
4
-
1
8
-
1
16
-
1
32
-
1
64

=
1
2
-(
1
4
+
1
8
+
1
16
+
1
32
+
1
64
),
=
1
2
-(
1
2
-
1
4
+
1
4
-
1
8
+
1
8
-
1
16
+
1
16
-
1
32
+
1
32
-
1
64
),
=
1
2
-
1
2
+
1
64

=
1
64

故答案为:
1
64