Lakshya sale (30 May-1 June) 🎖️ Last 180 days to CAT 🥳 Get upto 70% Off today. Take the Vow now
Edit MetaData
If x>2 and y>-1,then which of the following statements is necessarily true?
xy>-2
-x<2y
xy<-2
-x>2y
This kind of questions must be solved using the counter example method.
x = 100 and y = -1/2 rules out option a) x = 3 and y = 0 rules out options c) and d) Option b) is correct.
Click on the Email ☝️ to Watch the Video Solution
Can I know what is counter example method?
Hi Sachin, counter example method is nothing but finding ways to negate the options. Here, by assuming appropriate values for x and y, we can negate the options.
if we put x=3 and y=-2 then -3<-4 which ruled option b so why option b is true please clear my doubt
Hi, y>-1. Hence, we cannot assume that y=-2.
Create a FREE account and get:
CAT Time And Work
CAT Data Sufficiency
CAT Probability, Combinatorics
CAT Mensuration
CAT Number Systems
CAT Profit And Loss
CAT Logarithms, Surds and Indices
CAT Profit and Loss
CAT Geometry
CAT Averages
CAT Progressions and Series
CAT Linear Equations
CAT Averages, Ratio and Proportion
CAT Functions, Graphs and Statistics
CAT Coordinate Geometry
CAT Number Series
CAT Percentages
CAT Simple Interest Compound Interest
CAT Quadratic Equations
CAT Algebra
CAT Inequalities
CAT Remainders
CAT Arithmetic
CAT Logarithms
CAT Time, Speed and Distance
CAT Averages Mixtures Alligations
CAT Time Speed Distance
CAT Venn Diagrams
Login to your Cracku account.
Enter Valid Email
Follow us on
Incase of any issue contact support@cracku.in
Boost your Prep!
Day-wise Structured & Planned Preparation Guide
By proceeding you agree to create your account
Free CAT Schedule PDF will be sent to your email address soon !!!
Join cracku.in for Expert Guidance.