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Mathematics
Problem
Consider the following system: (1)
x
+
y
≤
10
x + y \le 10
x
+
y
≤
10
(2)
x
+
y
≤
8
x + y \le 8
x
+
y
≤
8
(3)
2
x
+
2
y
≤
20
2x + 2y \le 20
2
x
+
2
y
≤
20
(4)
x
≥
0
x \ge 0
x
≥
0
,
y
≥
0
y \ge 0
y
≥
0
How many of the inequalities (1), (2) and (3) are redundant? a) 0 b) 3 c) 2 d) 1
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