Take The Basic Probability Test Questions!

When a coin is tossed, there are two possible outcomes: heads or tails. Since there are only two equally likely outcomes, the probability of getting heads is 1 out of 2, or 1/2.

The complement of spinning a red or orange on the spinner would be the remaining colors on the spinner, which are green, purple, and blue.

The complement of an event refers to all the outcomes that are not part of that event. In this case, the event is getting an odd number when a die is rolled. The possible outcomes when rolling a die are 1, 2, 3, 4, 5, and 6. Out of these, the odd numbers are 1, 3, and 5. Therefore, the complement of getting an odd number would be getting an even number, which includes 2, 4, and 6.

The complement of an event refers to all the outcomes that are not part of that event. In this case, the event is rolling a 5. The complement of rolling a 5 would be rolling any number other than 5, which includes rolling a 1, 2, 3, or 4.

The probability of purchasing a dog is calculated by dividing the number of dogs by the total number of animals in the pet store. In this case, there are 12 dogs out of a total of 34 kittens, 12 dogs, and 15 birds. Thus, the probability is 12/61.

The probability of the complement of Sarah eating a tomato can be calculated by subtracting the probability of her eating a tomato from 1. Since Sarah has 4 tomatoes and a total of 12 fruits (4 tomatoes + 3 potatoes + 5 apples), the probability of her eating a tomato is 4/12. Therefore, the probability of the complement is 1 - 4/12, which simplifies to 8/12.

The probability of picking a pink sock is 6/16. The complement of picking a pink sock would be picking any sock that is not pink, which includes the blue and green socks. There are a total of 2 blue socks and 8 green socks, making a total of 10 socks that are not pink. Therefore, the probability of the complement of picking a pink sock is 10/16.

Katherine can make different outfits by combining each shirt with each pair of pants and each pair of socks. Since she has 7 shirts, 3 pairs of pants, and 4 pairs of socks, the total number of different outfits she can make is 7 x 3 x 4 = 84.

Probability is a mathematical concept used to express the likelihood or chance of an event occurring. It is not a method of counting objects or predicting future events, but rather a way of quantifying our knowledge or belief about the likelihood of an event happening or having already occurred. It allows us to assign a numerical value to the likelihood of an event, ranging from 0 (impossible) to 1 (certain).

The number of different meals that are possible can be calculated by multiplying the number of options for each category. In this case, there are 3 options for drinks, 4 options for appetizers, and 5 options for main courses. Therefore, the total number of different meals that can be created is 3 x 4 x 5 = 60.

The probability of choosing a jack can be calculated by dividing the number of favorable outcomes (4 jacks in a deck) by the total number of possible outcomes (52 cards in a deck). Therefore, the probability is 4/52.

The probability of choosing a boy to sit with can be calculated by dividing the number of boys by the total number of students in the lunch room. In this case, there are 35 boys and a total of 55 students (20 girls + 35 boys). Therefore, the probability of choosing a boy to sit with is 35/55.

The probability of pulling out a yellow marble can be calculated by dividing the number of yellow marbles in the bag by the total number of marbles. In this case, there are 4 yellow marbles out of a total of 14 marbles. Therefore, the probability of pulling out a yellow marble is 4/14.

The probability of choosing a quarter is 7/53 (since there are 7 quarters out of a total of 53 coins), and the probability of choosing a dime is 12/53 (since there are 12 dimes out of a total of 53 coins). To find the probability of choosing either a quarter or a dime, we add the probabilities together: 7/53 + 12/53 = 19/53. Therefore, the correct answer is 19/53.

To find the probability of choosing a pen and a pencil from the bin, you can use the concept of probability. The probability of two independent events occurring together is found by multiplying the probabilities of each event.

Probability of choosing a pen:

There are 3 pens in the bin.

The total number of items in the bin is 10 (pencils) + 3 (pens) + 14 (markers) = 27 items.

Probability of choosing a pen = (Number of pens) / (Total number of items) = 3 / 27 = 1/9.

Probability of choosing a pencil:

There are 10 pencils in the bin.

The total number of items in the bin is still 27 items.

Probability of choosing a pencil = (Number of pencils) / (Total number of items) = 10 / 27.

Now, to find the probability of both events happening together (choosing a pen and a pencil), you multiply the individual probabilities:

Probability of choosing a pen and a pencil = (1/9) * (10/27) = 10/243.

So, the probability of choosing a pen and a pencil from the bin is 10/243.