Learn
QUESTION
Q
The sum of the cubes of two numbers is 793. The sum of the numbers is 13. Then the difference of the two numbers is ?
Solution
Let, the two numbers be a and b.
a + b = 13,
Therefore, (a + b)2 = 132 = 169
a2 + b2 + 2ab = 169
a2 + b2 = 169 − 2ab ——-(1)
a3 + b3 = 793
a3 + b3 = (a + b) (a2 − ab +...
Register & Unlock access to Prep for free
Solution
.hez-title-solution{display: none;}
Keynote
The sum of the two numbers is odd number (13), which indicates that one number is odd and the other one is even.
The...
0
Numbers questions available for your Free Practice
0
Quantitative Ability questions available for your Free Practice
Computers
Functions
Computer Knowledge
APPSC
Environment & Biodiversity
Spot the Error
Geometry
Quadratic Relations
Quantitative Ability
IIFT
CMAT
Miscellaneous - QA
Directions
Arithmetic Operations
SSC
CAT
General Awareness
Pie Chart
Marketing
Arrangements & Rearrangements
Ratio & Proportion
IBPS
Fill in the Blanks
Miscellaneous - VA
Simple Equations
XAT
MAT
Speed, Time & Distance
Sentence Improvement
Word Building
Data Interpretation
LIC
Coordinate Geometry
Polity
Time & Work
Caselet DI
Averages
Blood Relations
Important Days
Tabular Data
UPSC
Authors & Books
GMAT
Set Theory
Parajumbles
Mixtures and Allegations
Mensuration
Simple & Compound Interest
Algebra
Quadratic Equations
General
Percentages
Number Series
Profit and Loss
Science & Technology
Trigonometry
Symbols & Notations
Probability
GRE
Mathematical Inequalities
Placement Tests
Series
NMAT
Miscellaneous - GA
Expansions
TCS
Coding & Decoding
Verbal Ability
SBI
Verbal Reasoning
Clocks & Calendars
Taglines
Logarithms
Passages
Circular Arrangement
Number System
Logical Reasoning
GATE
Syllogisms
Order arrangement
Data Sufficiency - LR
Line Graphs
Input - Output
Progressions & Series
Cloze Test
Permutations & Combinations
Inequalities
Numbers
RBI
Bar Graphs
Analogies
Marketing
Vocabulary
Current Affairs 2015
Data Problems
Practice
0
questions for Free
