Garza Cervantes
05/20/2023 · Senior High School

3. La cakuladora de Mariana es especial. Tiene una tecla \( D \) que duplica el número escrito inicial- mente y otra con una tecla \( T \) que borra el dígito de las unidades del número escrito inicialmente. Por ejemplo si el númere inicial es i21 y Naria- na aprieta \( D \), le da 242 y si luego apiretaT le queda 24 . Si aprieta en el siguiente orden las teclas: \( D, T, D, T \). ¿ De qué número puede partir, para obtener 80 ?

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Para obtener 80, Mariana puede comenzar con cualquier número entre 2000 y 2024. Por ejemplo, con 2000.

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