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Algebra Difficulty 1.0 Junior Find the answer United Kingdom

What is the value of $123^2 - 23^2$ ?

(A) $10000$ (B) $10409$ (C) $12323$ (D) $14600$ (E) $15658$

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Source: UK Mathematics Trust, licensed © UK Mathematics Trust; past papers published free at ukmt.org.uk. Statement reproduced verbatim; metadata (topic, difficulty) added by this project. Solutions are the publisher's, linked not copied.