Mathematics 0580 · IGCSE · Powers and roots

Powers and roots — practice question

Anna picks a number, multiplies it by 2, and then takes the square root. The result is 12.
(main)[2]

Which number did Anna think of?

Worked solution & mark scheme

This 2-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Working: \(12\,[\div\,2]\)” …

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