Question 1
SEAMO self-study edition 2027; not an official 2027 paper. Original source years are retained. 25 questions, 90 minutes; Q1–10: 3 points, Q11–20: 4 points, Q21–25: 6 points, total 100. Original response types and all subparts are preserved. Verified is an editorial convention; source defects, necessary assumptions and unresolved mathematical uncertainty are disclosed.
There were 20 questions in a Math Olympiad Test. Each correct answer earned 5 marks and each wrong answer lost 2 marks. Sally scored 51 marks. How many questions did she answer wrongly?
Assume Sally answered all 20 questions; this condition is needed because the source does not give a score for blanks.
There were 20 questions in a Math Olympiad Test. Each correct answer earned 5 marks and each wrong answer lost 2 marks. Sally scored 51 marks. How many questions did she answer wrongly?
Assume Sally answered all 20 questions; this condition is needed because the source does not give a score for blanks.