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SEAMO 2020 — Paper C — Grade 5–6 Question 9

SEAMO · SEAMO 2020 — Paper C — Grade 5–6

Question 9

Choose two different numbers from $\{5,6,7,\ldots,15\}$ with an even sum. How many choices are there?
  1. $23$
  2. $24$
  3. $25$
  4. $26$
  5. None of the above