Given that 0 < a < b < c < d, which of the following the largest ?
(c+d) / (a+b)
(a+d) / (b+c)
(b+c) / (a+d)
(b+d) / (a+c)
Explanation:
Take a = 1, b = 2, c = 3, d = 4. option A is clearly true.
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