Si una bolsa contiene 5 canicas rojas, 3 canicas azules y 2 canicas verdes, ¿cuál es la probabilidad de sacar una canica roja?

Probability Skills Assessment

Quiz
•
Mathematics
•
7th Grade
•
Hard
EMMANUEL TORRES
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4/10
5/10 o 1/2
3/10
2/10
Answer explanation
The probability of drawing a red marble is 5 out of the total 10 marbles, so the correct answer is 5/10 or 1/2.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es la probabilidad de sacar un número par al lanzar un dado de seis caras?
1/2
1/5
1/4
1/3
Answer explanation
The probability of rolling an even number on a fair six-sided die is 1/2 because there are 3 even numbers (2, 4, 6) out of a total of 6 possible outcomes.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si giras un girador con 4 secciones iguales numeradas del 1 al 4, ¿cuál es la probabilidad de aterrizar en un número impar?
1/3
1/2
2/3
1/4
Answer explanation
The probability of landing on an odd number is 2 out of the total 4 sections, which simplifies to 1/2. Therefore, the correct answer is 1/2.
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Si tiras un dado justo de seis caras dos veces, ¿cuál es la probabilidad de sacar un 2 en la primera tirada y un 4 en la segunda tirada?
1/18
1/36
1/6
1/12
Answer explanation
The probability of rolling a 2 on the first roll is 1/6, and the probability of rolling a 4 on the second roll is also 1/6. Therefore, the combined probability is 1/6 * 1/6 = 1/36.
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Una bolsa contiene 4 canicas rojas y 5 canicas azules. Si sacas una canica, no la reemplazas, y luego sacas otra canica, ¿cuál es la probabilidad de sacar 2 canicas azules?
2/9
5/18
4/9
3/9
Answer explanation
The probability of drawing the first blue marble is 5/9. After not replacing it, the probability of drawing a second blue marble is 4/8. Multiplying these probabilities gives 5/18.
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Si lanzas una moneda y tiras un dado justo de seis caras, ¿cuál es la probabilidad de obtener cara en la moneda y sacar un 3 en el dado?
1/12
1/3
1/6
1/2
Answer explanation
The probability of getting heads on the coin is 1/2, and the probability of rolling a 3 on the die is 1/6. Multiplying these probabilities gives 1/12, the probability of both events occurring together.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si giras un girador con 5 secciones iguales numeradas del 1 al 5, ¿cuál es la probabilidad de aterrizar en un número mayor que 3?
0.4
0.2
0.8
0.6
Answer explanation
The probability of landing on a number greater than 3 (4 or 5) out of 5 equal sections is 2/5 or 0.4, making it the correct choice.
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