Ask Questions, Get Answers

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

Three coins are tossed once.Find the probability of getting 3 heads

$\begin{array}{1 1}(A)\;\large\frac{1}{8}\\(B)\;\large\frac{1}{4}\\(C)\;\large\frac{1}{2}\\(D)\;\large\frac{1}{6}\end{array} $

Can you answer this question?

1 Answer

0 votes
Step 1:
If three coins are tossed,then the possible outcomes =$2^3=8$
$\therefore$ The sample space $S=\{HHH,HHT,HTH,HTT,THH,THT,TTH,TTT\}$
Step 2:
3 heads
Let E be the event of getting 3 heads
$\therefore n(E)=1$
$\Rightarrow $ Probability of getting 3 heads
Hence (A) is the correct answer.
answered Jul 1, 2014 by sreemathi.v
Ask Question
student study plans
JEE MAIN, CBSE, AIPMT Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App