Home




What digit does X represent if each of X

What digit does X represent if each of X and Y are single digits in the decimal 7.5XY9 ?

1. If the decimal is rounded to the nearest hundredth, the result is 7.55
2. If the decimal is rounded to the nearest tenth, the result is 7.5

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

Answer

Statement 1 says that the result of rounding the decimal to the nearest hundredth is 7.55. No information is given about the thousandths place so it is impossible to determine if the last digit of 7.55 was originally 5 or 4.

Statement 1 alone is insufficient to answer the question.

Statement 2 says that the result of rounding the decimal to the nearest tenth is 7.5. Notice that according to our rounding rules, this statement implies that the digit in the hundredths spot in the original decimal, was less than 5. There are 5 different digits less than 5 (including 0), and Statement 2 alone gives us no way to determine which of those is the actual value of the hundredths digit.

Statement 2 alone is also NOT sufficient to answer the question. Since the digit represented by the "X must be 4, the statements together are sufficient to answer the question.

Correct Answer - Choice C

About 2minuteGMAT

Founded in 2009, 2minuteGMAT guarantees that you will improve your GMAT score by 50 points or your money back. We send you a unique email every day for 3 months with 10 GMAT Questions of the Day (5 Math and 5 Verbal), a daily blurb about top business schools in the country, and advice from experts on how to improve your GMAT score. Visit the 2minuteGMAT blog for updates and GMAT tips. 

Essential GMAT Reading Comprehension Guide


After reading F1GMAT’s Essential GMAT Reading Comprehension Guide, you will:

1. Complete GMAT RC Questions in less than 1 minute and 50 seconds
2. Read Faster
3. Take Notes Effectively
4. Collect and Interpret Facts
5. Speed up Summary Creation
6. Remember Information
7. Question the Author   
8. Learn to Answer GMAT Reading Comprehension Title question   
9. Learn to Answer GMAT Reading Comprehension Main Idea Question   

10.Learn to Answer GMAT Reading comprehension Inference question

11. Learn to Answer GMAT Reading Comprehension Detail Question   

12. Learn to Answer GMAT Reading Comprehension Purpose Question
12. Learn to Answer GMAT organization of passage Question
13. Learn to identify the style/tone or attitude of the author

Download Essential GMAT Reading Comprehension Guide (2019 Edition) (100+ New Questions)









Mastering GMAT Critical Reasoning



After you read F1GMAT’s Mastering GMAT Critical Reasoning Guide, you will learn:

How to overcome flawed thinking in GMAT Critical Reasoning?  


How to spot Inconsistencies in Arguments  

How to eliminate out of scope answer choices using Necessary and Sufficient Conditions  

How to Paraphrase GMAT Critical Reasoning Question  

How to Answer Assumption Question Type  

How to Answer Conclusion Question Type  

How to Answer Inference Question Type  

How to Answer Strengthen Question Type  

How to Answer Weaken Question Type  

How to Answer bold-faced and Summary Question Types  

How to Answer Parallel Reasoning Questions  

How to Answer the Fill in the Blanks Question


Download Mastering GMAT Critical Reasoning (2019 Edition) (25+ New Questions)




Navigate F1GMAT


F1GMAT Services (MBA Applicants) 


F1GMAT's Books

MBA Salary(Latest Salary Data)
 
MBA Admission Interview Tips

Funding 

Deadlines

MBA Application Essays


MBA Recommendation Letter

GMAT Tutorials

GMAT Question Bank

Top MBA Programs

Get F1GMAT's Newsletters (Best in the Industry)
Included in the Newsletter:

  • Ranking Analysis
  • Post-MBA Salary Trends
  • Post-MBA Job Function & Industry Analysis
  • Post-MBA City Review
  • MBA Application Essay Tips
  • School Specific Essay Tips
  • GMAT Preparation Tips
  • MBA Admission Interview Tips
  • School Specific Interview Tips
  • Funding Guidance and
  • Special Consultation Service (only for Subscribers)

Subscribe to F1GMAT's Newsletter