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Multiple Choice

Age 11 to 14
ShortChallenge Level Yellow starYellow star
Secondary curriculum
  • Problem
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In a multiple choice exam, each candidate scores 4 points for every correct answer and loses 1 point for every incorrect answer.

Sarah answers all 100 questions and gets a score of 210 marks. How many questions did she answer correctly?



You can find more short problems, arranged by curriculum topic, in our short problems collection.

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Pair Sums

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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