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Quiz problem-solving 10

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In questo esercizio leggerai una frase affermativa e selezionerai una o piรน frasi che esprimono correttamente la negazione dell'originale.

๐Ÿ‘‘C2 - level.proficiency

1. She discovered a novel approach to solving the problem.

โญB2 - level.upperIntermediate

2. There is an effective solution to the problem.

๐Ÿš€C1 - Avanzato

3. He found the answer to a difficult mathematics problem.