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Challenge practice · Problem Solving

Heads and Legs, Guess and Check

15 questions Hard and very hard Hints if you need them Separate from the chapter quiz

These are hard and very hard questions on the whole chapter: heads and legs, two kinds of coins, tickets or bags, number machines, and numbers from clues. Take your time. Tap Show a hint only if you get stuck.

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15 questions with instant marking. It is free, and your scores are saved to your account so you can carry on from any device.

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