Lyons Murray
11/25/2023 · Primary School

LUNES Cuál es la probabilidad de obtener 2 sellos en el lanzamiento de 3 monedas: A. \( 1 / 8 \) B. \( 3 / 8 \) C. \( 2 / 5 \) D. \( 5 / 8 \)

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Para calcular la probabilidad de obtener 2 sellos (S) al lanzar 3 monedas, primero debemos identificar todos los posibles resultados de lanzar 3 monedas. Los resultados posibles son: 1. SSS 2. SSM 3. SMS 4. MSS 5. MSS 6. MSM 7. SMM 8. MMM Donde S representa sello y M representa cara. Ahora, contamos cuántas combinaciones tienen exactamente 2 sellos: - SSM - SMS - MSS Hay 3 combinaciones que tienen exactamente 2 sellos. El total de resultados posibles al lanzar 3 monedas es \(2^3 = 8\). Por lo tanto, la probabilidad de obtener exactamente 2 sellos es: \[ P(2 \text{ sellos}) = \frac{\text{Número de combinaciones con 2 sellos}}{\text{Total de combinaciones}} = \frac{3}{8} \] La respuesta correcta es: B. \( \frac{3}{8} \)

Quick Answer

La probabilidad de obtener 2 sellos en 3 monedas es \( \frac{3}{8} \).
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