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Prerequisites
- A knowledge of the four operations from lessons N2a, N2b, N2c, N2d and N2e is assumed.
- R9b – Finding percentages and percentage changes (basic) – in particular, finding a percentage of a number
- P2a – Theoretical probability
- P2b – Relative frequency
- N1c – Equivalent fractions and simplifying fractions
- R9a – Converting between fractions, decimals and percentages
Expected value
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Teacher resources
Links to past exam questions
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In the real world
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