single, standard number cube is tossed once. What is the probability of rolling a 1 or 2? Simplify your fraction if possible.
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1/4
3/5
1/3
1/6
The probability of rolling a 1 or 2 is 1/6 + 1/6 = 2/6. This fraction can be simplified by dividing both the numerator and denominator by their greatest common factor, which is 2. This gives us 1/3. Therefore, the probability of rolling a 1 or 2 is 1/3. Answer: 1/3.
A game involves spinning this spinner. What is the probability of the pointer landing on Blue?
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1/5
1/4
1/6
2/5
It is not possible to determine the exact probability without knowing how many sections the spinner has and how many of those sections are blue. However, we can estimate the probability by counting the number of blue sections and dividing by the total number of sections. Let's say there are 2 blue sections and a total of 6 sections. In this case, the probability of the pointer landing on blue would be 2/6, which simplifies to 1/3. Therefore, the actual probability of the pointer landing on blue depends on the spinner itself. None of the given answer choices are correct.
The table shows the color preferences for 20 students in a kindergarten class. What is the probability that one student, selected from the group, preferred the colors green or red? Simplify your fraction if possible.
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3/20
9/20
3/10
1/4
The number of students who preferred green or red is the sum of the number of students who preferred green and the number of students who preferred red. From the table, we can see that 5 students preferred green and 4 students preferred red. Therefore, the total number of students who preferred green or red is 5 + 4 = 9. The probability of selecting a student who preferred green or red is then 9/20. This fraction cannot be simplified any further. Therefore, the probability is 9/20. Answer: 9/20.
A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number LESS THAN 5. Simplify your fraction if possible.
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5/6
2/3
1/4
1/6
The numbers less than 5 on a standard number cube are 1, 2, 3, and 4. There are 4 of these numbers on the cube. The total number of possible outcomes when rolling the cube is 6 (since there are 6 possible numbers on the cube). Therefore, the probability of rolling a number less than 5 is 4/6. This fraction can be simplified by dividing both the numerator and denominator by 2, giving us 2/3. Therefore, the probability of rolling a number less than 5 is 2/3. Answer: 2/3.
The bag contains 20 marbles. There are 5 green marbles, 9 red marbles, and 6 blue marbles. What is the probability of randomly selecting a marble that is NOT red? Simplify your fraction if possible.
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P(not red) = 9/20
P(not red) = 3/10
P(not red) = 11/20
The probability of selecting a marble that is NOT red is equal to the sum of the probabilities of selecting a green marble and a blue marble. From the information given, we know that there are 5 green marbles out of 20 total marbles, and 6 blue marbles out of 20 total marbles. Therefore, the probability of selecting a green marble is 5/20 and the probability of selecting a blue marble is 6/20. Adding these probabilities together, we get 5/20 + 6/20 = 11/20. Therefore, the probability of randomly selecting a marble that is NOT red is 11/20. Answer: 11/20.
) When flipping a quarter, what is the probability the quarter will land on tails?
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1/2
3/4
2/3