We are open Saturday and Sunday!

Call Now to Set Up Tutoring:

(888) 888-0446

PSAT Math : How to find the probability of an outcome

Study concepts, example questions & explanations for PSAT Math

Create An Account

All PSAT Math Resources

10 Diagnostic Tests 421 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

← Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next →

Example Question #61 : Outcomes

How many different ways can 15 runners receive ribbons in a race if 1st, 2nd, 3rd, and 4th place ribbons are given?

Possible Answers:

$_{4}C_{15}$

$_{15}C_{4}$

$_{15}P_{4}$

$15!$

$_{4}P_{15}$

Correct answer:

$_{15}P_{4}$

Explanation:

Order matters, so a permutation of 15 things chosen 4 at a time, or $_{15}P_{4}$ , is the correct answer.

Report an Error

Example Question #161 : Statistics

A bag of marbles consists of 13 green, 15 blue, 12 black and an unknown number of red marbles. If the chance of choosing a red marble is 1 in 3, how many marbles are there total?

Possible Answers:

$56$

$45$

$60$

$40$

$54$

Correct answer:

$60$

Explanation:

Adding the green, blue, and black marbles together gives 40. Then if there is a $\frac{1}{3}$ chance that a red marble is drawn, there must be an additional 20 marbles.

Report an Error

Example Question #1511 : Psat Mathematics

Tiffany picks a peice of fruit from a bowl at random. The bowl contains 2 red delicious apples, 3 granny smith apples, 1 orange and 3 grapefruits. What is the probability that she chooses an apple?

Possible Answers:

$\frac{4}{9}$

$\frac{3}{9}$

$\frac{5}{9}$

$\frac{1}{9}$

$\frac{2}{9}$

Correct answer:

$\frac{5}{9}$

Explanation:

The chance she picks an apple is the total number of apples over the total number of fruits in the bowl. Since there are 2 kinds of apples, we add 2 red delicious and 3 granny smiths to get 5 apples total. In addition there are 4 more peices of fruit, so the total number of fruits is 9.

Report an Error

Example Question #62 : Outcomes

In a bag, there are 6 black marbles and 8 yellow marbles. What is the possibility of choosing a yellow marble at random?

Possible Answers:

$\dpi{100} \small \frac{3}{7}$

$\dpi{100} \small \frac{4}{7}$

$\dpi{100} \small \frac{3}{4}$

$\dpi{100} \small \frac{4}{3}$

Correct answer:

$\dpi{100} \small \frac{4}{7}$

Explanation:

There is a total of 14 marbles, of which, 8 are yellow; therefore the probability of choosing a yellow marble is $\dpi{100} \small \frac{8}{14}$ or $\dpi{100} \small \frac{4}{7}$

Report an Error

Example Question #71 : How To Find The Probability Of An Outcome

In a bag, there are 6 black and 8 yellow marbles. A yellow marble is chosen at random and is not replaced. What is the probability of choosing a second yellow marble?

Possible Answers:

$\dpi{100} \small \frac{6}{7}$

$\dpi{100} \small \frac{4}{7}$

$\dpi{100} \small \frac{7}{13}$

$\dpi{100} \small \frac{6}{13}$

Correct answer:

$\dpi{100} \small \frac{7}{13}$

Explanation:

Because a yellow marble was selected and not replaced, there is a total of 13 marbles in the bag and of which, 7 are yellow; therefore, the probability of selecting a yellow marble is $\dpi{100} \small \frac{7}{13}$

Report an Error

Example Question #231 : Data Analysis

A couple has four children. What is the probability of having exactly three girls?

Possible Answers:

$\frac{1}{8}$

$\frac{3}{16}$

$\frac{1}{4}$

$\frac{5}{8}$

$\frac{3}{4}$

Correct answer:

$\frac{1}{4}$

Explanation:

The total number of possibiliities is 16. The outcome we are looking for is three girls and one boy which happens only four times. Thus the probability becomes $\frac{4}{16}=\frac{1}{4}$ .

Report an Error

Example Question #72 : How To Find The Probability Of An Outcome

When a penny is flipped three times in a row, what is the probability of getting all heads or all tails?

Possible Answers:

$\frac{1}{3}$

$\frac{1}{8}$

$\frac{1}{6}$

$\frac{1}{4}$

$\frac{3}{8}$

Correct answer:

$\frac{1}{4}$

Explanation:

The sample space for three coin tosses in a row is 8. Getting all heads can be done only one way. Getting all tails can be done only one way. So the probability of getting all heads or all tails is $\frac{2}{8}$ or $\frac{1}{4}$ .

Report an Error

Example Question #73 : How To Find The Probability Of An Outcome

A couple has three children. What is the probability of having exactly two girls or two boys?

Possible Answers:

$\frac{1}{8}$

$\frac{2}{3}$

$\frac{1}{2}$

$\frac{3}{4}$

$\frac{3}{8}$

Correct answer:

$\frac{3}{4}$

Explanation:

The sample space for three children is 8. We can count up what we want or subtract out what we don't want. What we don't want is all boys or all girls.

So the probability becomes $1 - \frac{2}{8} = \frac{6}{8} = \frac{3}{4}$

Report an Error

Example Question #74 : How To Find The Probability Of An Outcome

How many different ways can five books be lined up on a shelf?

Possible Answers:

130

120

150

Correct answer:

120

Explanation:

Order matters, so we use permutations. $_{5}^{5}\textrm{P}$ is $5\cdot 4\cdot 3\cdot 2\cdot 1 = 120$

Report an Error

Example Question #76 : How To Find The Probability Of An Outcome

Jimmy is having trouble choosing what to wear to the baseball game. He has six shirts, three pants, two pairs of socks and three pairs of shoes. How many different outfits does Jimmy have to choose from?

Possible Answers:

150

125

108

Correct answer:

108

Explanation:

Choosing one of each clothing item is an independent event and should be multiplied together. So the answer becomes

$shirts\times pants\times socks\times shoes$

$6 \cdot 3 \cdot 2 \cdot 3 = 108$ different combinations.

Report an Error

← Previous 1 2 3 4 5 6 7 8 9 10 11 12 Next →

View PSAT Mathematics Tutors

Max
Certified Tutor

SHAHiDBEHESHTiUNiVERSiTY, Bachelor of Science, Mathematics. SHAHiDBEHESHTiUNiVERSiTY, Master of Science, Mathematics.

View PSAT Mathematics Tutors

Shakeel
Certified Tutor

View PSAT Mathematics Tutors

Ann
Certified Tutor

Wright State University-Main Campus, Bachelor of Science, Mathematics and Computer Science. Western Governors University, Mas...

All PSAT Math Resources

10 Diagnostic Tests 421 Practice Tests Question of the Day Flashcards Learn by Concept

Popular Subjects

Chemistry Tutors in New York City, Calculus Tutors in Los Angeles, Biology Tutors in Los Angeles, GRE Tutors in Los Angeles, SSAT Tutors in San Francisco-Bay Area, Physics Tutors in Houston, Spanish Tutors in Phoenix, Computer Science Tutors in Philadelphia, ACT Tutors in Los Angeles, SSAT Tutors in Seattle

Popular Courses & Classes

ISEE Courses & Classes in Dallas Fort Worth, ACT Courses & Classes in Houston, SAT Courses & Classes in San Francisco-Bay Area, Spanish Courses & Classes in New York City, Spanish Courses & Classes in Miami, SAT Courses & Classes in San Diego, LSAT Courses & Classes in Phoenix, ISEE Courses & Classes in New York City, ISEE Courses & Classes in San Francisco-Bay Area, Spanish Courses & Classes in San Diego

Popular Test Prep

SSAT Test Prep in Philadelphia, GMAT Test Prep in Atlanta, LSAT Test Prep in Dallas Fort Worth, GMAT Test Prep in Washington DC, MCAT Test Prep in Miami, GMAT Test Prep in Chicago, GMAT Test Prep in New York City, GMAT Test Prep in Boston, GMAT Test Prep in Los Angeles, SSAT Test Prep in Los Angeles

DMCA Complaint

If you believe that content available by means of the Website (as defined in our Terms of Service) infringes one or more of your copyrights, please notify us by providing a written notice (“Infringement Notice”) containing the information described below to the designated agent listed below. If Varsity Tutors takes action in response to an Infringement Notice, it will make a good faith attempt to contact the party that made such content available by means of the most recent email address, if any, provided by such party to Varsity Tutors.

Your Infringement Notice may be forwarded to the party that made the content available or to third parties such as ChillingEffects.org.

Please be advised that you will be liable for damages (including costs and attorneys’ fees) if you materially misrepresent that a product or activity is infringing your copyrights. Thus, if you are not sure content located on or linked-to by the Website infringes your copyright, you should consider first contacting an attorney.

Please follow these steps to file a notice:

You must include the following:

A physical or electronic signature of the copyright owner or a person authorized to act on their behalf; An identification of the copyright claimed to have been infringed; A description of the nature and exact location of the content that you claim to infringe your copyright, in \ sufficient detail to permit Varsity Tutors to find and positively identify that content; for example we require a link to the specific question (not just the name of the question) that contains the content and a description of which specific portion of the question – an image, a link, the text, etc – your complaint refers to; Your name, address, telephone number and email address; and A statement by you: (a) that you believe in good faith that the use of the content that you claim to infringe your copyright is not authorized by law, or by the copyright owner or such owner’s agent; (b) that all of the information contained in your Infringement Notice is accurate, and (c) under penalty of perjury, that you are either the copyright owner or a person authorized to act on their behalf.

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors LLC
101 S. Hanley Rd, Suite 300
St. Louis, MO 63105

Or fill out the form below:

Do not fill in this field

Contact Information

* Full legal name

Company name

* Phone number

* Email address

Address

* Address1

Address2

* City

* State

* Zipcode

* Country

Complaint Details

* URL of copyrighted work (where your original material is located)

* Please describe the copyrighted work so that it may be easily identified

I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law.

This notification is accurate.

I acknowledge that there may be adverse legal consequences for making false or bad faith allegations of copyright infringement by using this process.

* Signature (your digital signature is legally binding)

HIGH SCHOOL

GRADUATE SCHOOL

K-8

Search 50+ Tests

math tutoring

science tutoring

foreign languages

elementary tutoring

other

Search 350+ Subjects

PSAT Math : How to find the probability of an outcome

Study concepts, example questions & explanations for PSAT Math

All PSAT Math Resources

Example Questions

Example Question #61 : Outcomes

Example Question #161 : Statistics

Example Question #1511 : Psat Mathematics

Example Question #62 : Outcomes

Example Question #71 : How To Find The Probability Of An Outcome

Example Question #231 : Data Analysis

Example Question #72 : How To Find The Probability Of An Outcome

Example Question #73 : How To Find The Probability Of An Outcome

Example Question #74 : How To Find The Probability Of An Outcome

Example Question #76 : How To Find The Probability Of An Outcome

All PSAT Math Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: