info@clay6.com
logo

Ask Questions, Get Answers

X
 
Questions  >>  JEEMAIN and NEET  >>  Mathematics  >>  Class12  >>  Probability
Answer
Comment
Share
Q)

A coin is tossed thrice. The probability of getting head at least once is

$\begin {array} {1 1} (1)\;\large\frac{3}{8} & \quad (2)\;\large\frac{1}{8} \\ (3)\;\large\frac{1}{4} & \quad (4)\;\large\frac{7}{8} \end {array}$

 

1 Answer

Comment
A)
Need homework help? Click here.
We have P( at least one head ) = 1-P ( no head)
$ = 1-P(TTT)$
$=1- \large\frac{1}{2} \times \large\frac{1}{2} \times \large\frac{1}{2}$
$ 1 - \large\frac{1}{8}$
$ = \large\frac{7}{8}$
Ans : (D)
Home Ask Homework Questions
...