Learn
QUESTION
Q
A consignment of 20 picture tubes contains 5 defectives. Two tubes are selected one after the other at random. The...
Solution
Number of ways of selecting one defective pipe is = 5C1 = 5Number of ways of selecting one pipe from 20 = 20C1 = 20Probability of selecting a defective pipe = 5/20 =...
Register & Unlock access to Prep for free
Solution
.hez-title-solution{display: none;}
Keynote
#hez-keynote-title{display: none;}
0
Probability questions available for your Free Practice
0
Quantitative Ability questions available for your Free Practice
Order arrangement
Time & Work
Percentages
Tabular Data
IBPS
Line Graphs
Quantitative Ability
GMAT
IIFT
Placement Tests
TCS
Profit and Loss
Caselet DI
RBI
Numbers
GATE
Cloze Test
Authors & Books
Taglines
UPSC
Miscellaneous - VA
Progressions & Series
Marketing
Directions
Data Problems
Environment & Biodiversity
Mixtures and Allegations
Averages
Marketing
Blood Relations
General Awareness
XAT
Trigonometry
Parajumbles
Bar Graphs
CMAT
Verbal Reasoning
Expansions
Computers
Word Building
Miscellaneous - GA
NMAT
Logarithms
Symbols & Notations
Probability
Vocabulary
Inequalities
Number System
Verbal Ability
Mensuration
Arrangements & Rearrangements
Polity
Set Theory
Simple Equations
Clocks & Calendars
Analogies
Computer Knowledge
GRE
Input - Output
APPSC
Spot the Error
CAT
LIC
Series
Coding & Decoding
Circular Arrangement
Miscellaneous - QA
Sentence Improvement
Quadratic Relations
Permutations & Combinations
Arithmetic Operations
Functions
SBI
Important Days
Simple & Compound Interest
General
Data Interpretation
Fill in the Blanks
Science & Technology
SSC
Logical Reasoning
Number Series
Coordinate Geometry
Pie Chart
Current Affairs 2015
Algebra
Syllogisms
Speed, Time & Distance
Passages
Quadratic Equations
Geometry
Data Sufficiency - LR
Mathematical Inequalities
MAT
Ratio & Proportion
Practice
0
questions for Free
