Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  CBSE XI  >>  Math  >>  Probability
0 votes

Four candidates A,B,C,D have applied for the assignment to coach a school cricket team.If A is twice as likely to be selected as B,and B and C are given about the same chance of being selected,while C is twice as likely to be selected as D,what are the probabilities that A will not be selected?

$\begin{array}{1 1}(A)\;\large\frac{5}{9}\\(B)\;\large\frac{2}{9}\\(C)\;\large\frac{1}{9}\\(D)\;\text{None of these}\end{array} $

Can you answer this question?

1 Answer

0 votes
Step 1:
Let the probability of D selected be $'x'$
$\therefore P(D)=x$
Sum of all probabilities =1
$\therefore 4x+2x+2x+x=1$
Step 2:
A will not be selected
$\therefore P(A$ will not selected)=$1-P(A)=1-4x$
$\Rightarrow 1-\large\frac{4}{9}=\frac{5}{9}$
Hence (A) is the correct answer.
answered Jul 7, 2014 by sreemathi.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App