Loading...

Lesson: Data Sufficiency Challenging - 20t05

Multiple Steps: Example 2

[Page 20 of 24]

If m and n are positive integers, are m and n consecutive integers?

1)

2)

The question stem asks whether m and n are consecutive numbers. What are the two ways to represent this relationship algebraically?

m =

m =

Review Statement 1 below. Is it sufficient or insufficient? Select the correct answer and then click Continue.

1)

  Sufficient Insufficient    

Review Statement 2 below. Is it sufficient or insufficient? Select the correct answer and then click Continue.

2)

  Sufficient Insufficient    

For this statement, we don’t need to go through the steps because we recognize the expression on the right side of the equation as a "classic" algebraic identity: . So, in this case, . Once again, we have confirmation that n = m – 1 (which is the same as m = n + 1). Statement 2 is also sufficient.

This question wasn’t nearly as difficult as it first appeared, once we saw the steps we needed to take in order to reach our goal. The fastest way to get there was to look for an algebraic way to determine the relationship between n and m. We also could’ve picked numbers, though in a situation like this you have to be sure not to spend too much time trying out various pairs of consecutive integers.

Next to display next topic in the chapter.

Test Prep Lessons With Video Lessons and Explained MCQ

More for You
All in this Category

You may be interested in

Edwardes College - Peshawar

Edwardes College - Peshawar is a po ...

Colleges in Lahore

Find a comprehensive list of major ...

Study in Pakistan

Have an opportunity to study in an ...

Study in Turkey

How to get admission and Visa to st ...

GRE Chemistry

Complete review of GRE Chemistry wi ...

Admission and Employment Tests

Announcements of Admission and Empl ...

COMSATS - BBA Hons

COMSATS Institute of Information Te ...

NUML National University of Modern Language

NUML National University of Modern ...