GMAT  Sequences & Series
You may get one or two questions from sequences and series in the quant section of the GMAT exam  in both variants viz., problem solving and data sufficiency. The concepts tested includes arithmetic progression and geometry progression. This topic may also feature questions that form a series that are neither AP nor GP. A collection of GMAT practice questions from arithmetic and multiplicative sequences is given below. Attempt these questions and check whether you have got the correct answer. If you could not crack the questions, go to the explanatory answer or the video explanations (wherever provided) to learn how to crack the question.
What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?
 897
 164,850
 164,749
 149,700
 156,720
 Correct AnswerChoice (B).
The sum of all 3 digit numbers that leave a remainder of 2 when divided by 3 is 164,850. Correct answer  Explanatory Answer
 Sum of AP
 Easy
How many 3 digit positive integers exist that when divided by 7 leave a remainder of 5?
 128
 142
 143
 141
 129
 Correct AnswerChoice (E).
The number of 3 digit positive integers that leave a remainder of 5 when divided by 7 is 129. Correct answer  Explanatory Answer
 AP  number of terms
 Easy
The average of 5 consecutive integers starting with m as the first integer is n. What is the average of 9 consecutive integers that start with (m + 2)?
 m + 4
 n + 6
 n + 3
 m + 5
 n + 4
 Correct AnswerChoice (E).
The average of 9 consecutive integers that start with (m + 2) is (n + 4). Correct answer  Explanatory Answer
 Average of an A.P.
 Easy
The sum of the fourth and twelfth term of an arithmetic progression is 20. What is the sum of the first 15 terms of the arithmetic progression?
 300
 120
 150
 170
 270
 Correct AnswerChoice (C).
The sum of the first 15 terms is 150. Correct answer  Explanatory Answer
 Sum of an A.P.
 Medium
If the ratio of the sum of the first 6 terms of a G.P. to the sum of the first 3 terms of the G.P. is 9, what is the common ratio of the G.P?
 3
 1/3
 2
 9
 1/9
 Correct AnswerChoice (C).
The common ratio is 2. Correct answer  Explanatory Answer
 Sum of G.P.
 Medium
Set A contains all the even numbers between 2 and 50 inclusive. Set B contains all the even numbers between 102 and 150 inclusive. What is the difference between the sum of elements of set B and the sum of the elements of set A?
 2500
 5050
 11325
 6275
 2550
 Correct AnswerChoice (A).
The difference in the sum of the two sets is 2500. Correct answer  Explanatory Answer
 Sum of 2 A.P.
 Easy
Data Sufficiency : A set S contains the following elements: {7, 11, 15, 19, 23, x}. What is the value of x?
 The elements are in arithmetic progression.
 x is prime.
 Correct AnswerChoice (C).
The two statements together are sufficient. Correct answer  Explanatory Answer
 Data Sufficiency in AP
 Easy
In the first 1000 natural numbers, how many integers exist such that they leave a remainder 4 when divided by 7, and a remainder 9 when divided by 11?
 11
 14
 12
 13
 10
 Correct AnswerChoice (D).
The number of integers up to the first 1000 natural numbers that satisfy both the conditions is 13. Correct answer  Explanatory Answer
 Elements common to 2 sequences
 Medium
Data Sufficiency : What is the 6^{th} term of the Arithmetic sequence?
 The sum of the 6^{th} to the 12^{th} term of the sequence is 77.
 The sum of the 2^{nd} to the 10^{th} term of the sequence is 108.
 Correct AnswerChoice (B).
Statement 2 alone is sufficient; statement 1 is not. Correct answer  Explanatory Answer
 DS : Finding term of AP
 Medium
Free GMAT Prep Questions
 Algebra
 Sequences & Series
 Statistics
 Inequalities
 Geometry
 Mensuration
 Coordinate Geometry
 Number Properties & Theory
 Percents
 Permutation & Probability
 Profits
 Quadratic Equations
 Ratio Proportion
 Sets
 Simple & Compound Interest
 Rates : Speed distance time
 Rates : Work time
 Data sufficiency
 Sentence Correction
 Free Quiz
Next GMAT Batches @ Chennai

July 16, 2016
 Weekend Morning Batch
 Class Timings
 Sat: 10:30 AM to 1:30 PM
 Sun: 10:30 AM to 1:30 PM
 Fees : Rs.17,500
Aug 13, 2016
 Weekend Morning Batch
 Class Timings
 Sat: 10:30 AM to 1:30 PM
 Sun: 10:30 AM to 1:30 PM
 Fees : Rs.17,500
Contact Us
4GMAT  GMAT Classes
II floor, Kanya West Wing
48/1 Velachery Taramani Road
Velachery. Chennai 600042.
Contact : Mr. Baskar
Call 95000 48484
Center Open: Sat and Sun: 10 AM to 7:30 PM. 
June 25, 2016
 'SundayOnly' Batch
 Class Timings
 Session 1: 6:30 AM to 9:30 AM
 Session 2: 10:30 AM to 1:30 PM
 Fees : Rs.17,500
June 30, 2016
 Weekday  Morning Batch
 Class Timings
 Monday to Friday: 6:30 AM to 9:30 AM
 Duration: 5 weeks
 Fees : Rs.17,500
Contact Us
4GMAT  GMAT Classes
14B/1 Dr Thirumurthy Nagar I Street
Nungambakkam
Chennai 600034.
Contact : Mr.Baskar
Call 044 4500 8484  95000 48484
Useful Links
Prep Freebies
Contact Us
4GMAT  GMAT Classes
14B/1 Dr Thirumurthy Nagar I St.
Nungambakkam, Chennai 600 034
E mail : info@4gmat.com
Phone : +91 44 4500 8484
Mobile : +91 95000 48484
@ Bangalore : +91 74060 48484
GMAT™ and GMAC™ are registered trademarks of the Graduate Management Admission Council™. The Graduate Management Admission Council™ does not endorse, nor is it affiliated in any way with the owner or any content of this web site.
Copyright 2004  16 4GMAT.COM, A division of Test Catalyst (India) Private Limited. All rights reserved.
Terms and Conditions  Privacy policy  Disclaimer