We are open Saturday and Sunday!

Call Now to Set Up Tutoring:

(888) 888-0446

SAT Math : Sequences

Study concepts, example questions & explanations for SAT Math

Create An Account

All SAT Math Resources

16 Diagnostic Tests 660 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

← Previous 1 2 3 4 5 Next →

Example Question #5 : How To Find The Next Term In An Arithmetic Sequence

Solve each problem and decide which is the best of the choices given.

Find the sixth term in the following arithmetic sequence.
$\frac{1}{4},\frac{1}{8},0...$

Possible Answers:

$-\frac{1}{8}$

$-\frac{1}{4}$

$\frac{3}{8}$

$-\frac{3}{8}$

Correct answer:

$-\frac{3}{8}$

Explanation:

First find the common difference of the sequence,

$\frac{1}{4}-\frac{1}{8}=\frac{1}{8}$

$\frac{1}{8}-0=\frac{1}{8}$

Thus there is a common difference of

$\frac{1}{8}$ between each term,

so follow that pattern for another terms, and the result is $-\frac{3}{8}$ .

Report an Error

Example Question #6 : How To Find The Next Term In An Arithmetic Sequence

Find the missing number in the sequence:

3, 9, 27, X , 243

Possible Answers:

112

Correct answer:

Explanation:

The pattern of this sequence is 3^n where represents the position of the number in the sequence.

3^n = 3^1 = 3 for the first number in the sequence.

3^2 = 9 for the second number.

3^3 = 27

For the fourth term, n=4 . Therefore, 3^4 = 81 .

Report an Error

Example Question #7 : How To Find The Next Term In An Arithmetic Sequence

An arithmetic sequence begins as follows:

$\sqrt{20} , \sqrt{180},...$

Express the next term of the sequence in simplest radical form.

Possible Answers:

$20\sqrt{5}$

$10 \sqrt{5}$

$18\sqrt{5}$

$9\sqrt{5}$

$36\sqrt{5}$

Correct answer:

$10 \sqrt{5}$

Explanation:

Using the Product of Radicals principle, we can simplify the first two terms of the sequence as follows:

$a_{1}=\sqrt{20} = \sqrt{4} \cdot \sqrt{5} = 2 \sqrt{5}$

$a_{2}= \sqrt{180} = \sqrt{36} \cdot \sqrt{5} = 6 \sqrt{5}$

The common difference of an arithmetic sequence can be found by subtracting the first term from the second:

$d = a_{2} - a_{1}$

$d = 6 \sqrt{5} - 2\sqrt{5} = ( 6 - 2 )\sqrt{5} = 4 \sqrt{5}$

Add this to the second term to obtain the desired third term:

$a_{3} = a_{2} +d = 6 \sqrt{5} + 4 \sqrt{5} =( 6 + 4) \sqrt{5} = 10 \sqrt{5}$ .

Report an Error

Example Question #8 : How To Find The Next Term In An Arithmetic Sequence

An arithmetic sequence begins as follows:

$\sqrt{5} , \sqrt{10},...$

Give the next term of the sequence in simplest radical form.

Possible Answers:

$3 \sqrt{5}$

$\sqrt{15}$

None of the other choices gives the correct response.

$2 \sqrt{5}$

$2 \sqrt{10}$

Correct answer:

None of the other choices gives the correct response.

Explanation:

Since no perfect square integer greater than 1 divides evenly into 5 or 10, both of the first two terms of the sequence are in simplest form.

The common difference of an arithmetic sequence can be found by subtracting the first term from the second:

$d = a_{2} - a_{1}$

Setting $a_{1}= \sqrt{5}, a_{2}= \sqrt{10}$ :

$d = \sqrt{10} - \sqrt{5}$

Add this to the second term to obtain the desired third term:

$a_{3} = a_{2} +d =\sqrt{10} + ( \sqrt{10} - \sqrt{5}) = \sqrt{10} + \sqrt{10} - \sqrt{5} = 2\sqrt{10}- \sqrt{5}$

This is not among the given choices.

Report an Error

Example Question #9 : How To Find The Next Term In An Arithmetic Sequence

An arithmetic sequence begins as follows:

$\frac{1}{5} , \frac{1}{3} , ...$

Give the sixth term of the sequence in decimal form.

Possible Answers:

0.8

0.875

$0.9\overline{3}$

$0.8\overline{6}$

$0.\overline{8}$

Correct answer:

$0.8\overline{6}$

Explanation:

The common difference of an arithmetic sequence can be found by subtracting the first term from the second:

$d = a_{2} - a_{1}$

Setting $a_{1}= \frac{1}{5}, a_{2}= \frac{1}{3}$ :

$d = \frac{1}{3} - \frac{1}{5} = \frac{5}{15} - \frac{3}{15} = \frac{2}{15}$

The th term $a_{n}$ of an arithmetic sequence can be derived using the formula

$a_{n} = a_{1} + (n-1)d$

Setting $n = 6 , a_{1} = \frac{1}{5}= \frac{3}{15}, d = \frac{2}{15}$ :

$a_{n} = \frac{3}{15} + (6-1) \cdot \frac{2}{15}$

$= \frac{3}{15} +5 \cdot \frac{2}{15}$

$= \frac{3}{15} + \frac{10}{15}$

$= \frac{13}{15}$

The decimal equivalent of this can be found by dividing 13 by 15 as follows:

Division

The correct choice is $0.8\overline{6}$ .

Report an Error

Example Question #1 : How To Find The Next Term In An Arithmetic Sequence

An arithmetic sequence begins as follows:

4, 5 i ,...

Give the sixth term of the sequence.

Possible Answers:

-20 + 30 i

25+30i

-20 + 25i

20+25 i

-16+25i

Correct answer:

-16+25i

Explanation:

The common difference of an arithmetic sequence can be found by subtracting the first term from the second:

$d = a_{2} - a_{1}$

Setting $a_{1}= 4, a_{2}= 5i$ :

d = 5i - 4 = -4+5i

The th term $a_{n}$ of an arithmetic sequence can be derived using the formula

$a_{n} = a_{1} + (n-1)d$

Setting $a_{1}= 4, n = 6, d= -4+5i$

$a_{6} =4 + (6-1) ( -4+5i)$

=4 +5( -4+5i)

=4 +( -20+25i)

=(4 -20)+25i

=-16+25i

Report an Error

Example Question #21 : Nth Term Of An Arithmetic Sequence

Complete the sequence:

1, 8, 27, x, 125

Possible Answers:

150

125

400

335

Correct answer:

Explanation:

The pattern of this sequence is n^3 where represents the place of each number in the order of the sequence.

Here are our givens:

n^3

1^3 = 1 , our first term.

2^3 = 8 , our second term.

3^3 = 27 , our third term.

This means that our fourth term will be:

4^3 = 64 .

Report an Error

← Previous 1 2 3 4 5 Next →

View SAT Mathematics Tutors

Aaqib
Certified Tutor

The University of Texas at Dallas, Bachelor of Science, Neuroscience.

View SAT Mathematics Tutors

Kenneth
Certified Tutor

North Georgia University, Bachelors, Accounting. Brenau University, Masters, Business.

View SAT Mathematics Tutors

Bill
Certified Tutor

SUNY Empire State College, Bachelors, General Sciences, Theater.

All SAT Math Resources

16 Diagnostic Tests 660 Practice Tests Question of the Day Flashcards Learn by Concept

SAT Math Tutors in Top Cities:

Atlanta SAT Math Tutors, Austin SAT Math Tutors, Boston SAT Math Tutors, Chicago SAT Math Tutors, Dallas Fort Worth SAT Math Tutors, Denver SAT Math Tutors, Houston SAT Math Tutors, Kansas City SAT Math Tutors, Los Angeles SAT Math Tutors, Miami SAT Math Tutors, New York City SAT Math Tutors, Philadelphia SAT Math Tutors, Phoenix SAT Math Tutors, San Diego SAT Math Tutors, San Francisco-Bay Area SAT Math Tutors, Seattle SAT Math Tutors, St. Louis SAT Math Tutors, Tucson SAT Math Tutors, Washington DC SAT Math Tutors

Popular Courses & Classes

ISEE Courses & Classes in Phoenix, ACT Courses & Classes in Miami, GMAT Courses & Classes in New York City, GMAT Courses & Classes in Philadelphia, GRE Courses & Classes in Phoenix, GRE Courses & Classes in San Francisco-Bay Area, LSAT Courses & Classes in Seattle, SSAT Courses & Classes in Los Angeles, Spanish Courses & Classes in Phoenix, GMAT Courses & Classes in Washington DC

Popular Test Prep

SAT Test Prep in Boston, LSAT Test Prep in San Diego, ISEE Test Prep in Miami, GRE Test Prep in Miami, SAT Test Prep in San Diego, ISEE Test Prep in San Diego, SSAT Test Prep in Washington DC, ACT Test Prep in San Diego, LSAT Test Prep in Chicago, ACT Test Prep in Miami

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

SAT Math : Sequences

Study concepts, example questions & explanations for SAT Math

All SAT Math Resources

Example Questions

Example Question #5 : How To Find The Next Term In An Arithmetic Sequence

Example Question #6 : How To Find The Next Term In An Arithmetic Sequence

Example Question #7 : How To Find The Next Term In An Arithmetic Sequence

Example Question #8 : How To Find The Next Term In An Arithmetic Sequence

Example Question #9 : How To Find The Next Term In An Arithmetic Sequence

Example Question #1 : How To Find The Next Term In An Arithmetic Sequence

Example Question #21 : Nth Term Of An Arithmetic Sequence

All SAT Math Resources

Report an issue with this question

DMCA Complaint

Contact Information

Address

Complaint Details

Email address:
Your name:
Feedback: