Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Explain solution RD Sharma class 12 chapter Probability exercise 30.1 question 4 maths

Explain solution RD Sharma class 12 chapter Probability exercise 30.1 question 4 maths

Answers (1)

Answer:

 \frac{1}{2}

Hint:

\text { Probability }=\frac{\text { No. of elements required }}{ \text { Total no. of elements }}

Given, two events

Let,    B         = Event of getting head on toss third

                       = { HHH, HTH, THH, TTH }

Similarly, A  =  Event of getting head on first two tosses

                     = { HHH, HHT }

Now,

  A∩B       = { HHH }

Therefore,

Required probability

\begin{aligned} &=\frac{n(A\cap B)}{n(A)}\\ &=\frac{1}{2} \end{aligned}

Posted by

Gurleen Kaur

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

PM Modi's Pariksha Pe Charcha 2025 to be held next month, registrations open till January 14
anam-khan

CBSE Board Exams 2025: Online portal for availing exemptions by CWSN students opens
anam-khan

Board Exams: States agree to equivalence; no question paper ‘jumbling’ from next year, says PARAKH CEO

Latest Question