Final answer:
No, they do not have the same meaning.
Step-by-step explanation:
No, they do not have the same meaning. The sentence '¿Con cuánta frecuencia canta?' translates to 'How frequently does he/she sing?' whereas 'How often does she dance?' translates to '¿Con qué frecuencia baila?'. While both sentences are related to frequency, they ask about different actions, singing and dancing, respectively.
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