Question

Section A
A1
What is the value of
?
1
1
+
2
2
+
3
3
+
4
4
-
(
1
4
+
2
3
+
3
2
+
4
1
)
A2
Mike drank 60% of his glass of milk. Afterwards, 80 ml of milk remained in the glass.
What volume of milk was initially in the glass?