
Matemática / Estadistica
Authored by Gabriel Guerrero
Mathematics
11th Grade
Used 1+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
1. Si un alumno obtuvo de calificación 42, 45 y 47 en 3 exámenes
¿Cuánto debe obtener en el siguiente examen para tener un promedio de 46?
A. 50
B. 42
C. 47
D. 40
2.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
2. En una urna se tienen 12 fichas de diferentes colores y figuras: 4 circulos rojos,
3 triángulos amarillos, 2 cuadrados rojos y 3 rombos azules.
Si se puede extraer una ficha al azar, cual seria la probabilidad de sacar una amarilla.
A. 1/2
B. 1/7
C. 1/5
D. 1/4
3.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
3. Si la probabilidad de sacar una canica azul de una caja de 20 canicas de diferentes colores es de 2/5.
¿Cuántas canicas azules hay en la caja?
A. 2
B. 8
C. 5
D. 4
4.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
4. Calcula el porcentaje de perros que hay en una casa con varias
mascotas y animales si hay 7 perros, 9 gatos, 2 vacas y 1 caballo.
A. 36.84%
B. 34.28%
C. 35.50%
D. 33.41%
5.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
A. 6x-21m-8z
B. 7x-21m-9z
C. 6x+21m-8z
D. 8x-22m+8z
6.
MULTIPLE CHOICE QUESTION
2 mins • 7 pts
A. 25h - 16
B. -5h + 30
C. 20h + 11
D. -15h + 14
7.
MULTIPLE CHOICE QUESTION
2 mins • 3 pts
7. Un estudiante tomó cinco exámenes y obtuvo las siguientes calificaciones:
85, 92, 76, 88 y 90. ¿Cuál es su calificación promedio?
7. Un estudiante tomó cinco exámenes y obtuvo las siguientes calificaciones:
85, 92, 76, 88 y 90. ¿Cuál es su calificación promedio?
A. 86.2
B. 80
C. 85.8
D. 94.2
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