TMUA 2020 Paper 2 Q10 — Worked Solution

P2·Inequalities, Logic & Quantifiers·6.5Official · 2020 · Q10

adding-inequalitiesmust-be-truecounterexample

The real numbers

a

b

c

and

d

satisfy both

0 < a + b < c + d and 0 < a + c < b + d .

Which of the following inequalities must be true?

a < d

b < c

III

a + b + c + d > 0

Discussion

No discussions yet. Stuck, or want to share an approach? Start the first one.