LIVE Course for free

Rated by 1 million+ students
Get app now
0 votes
in Computer by (42.4k points)
closed by

If two fair coins are flipped and at least one of the outcomes is known to be a head, what is the probability that both outcomes are heads?

(A) 1/3 

(B) 1/4 

(C) 1/2

 (D) 2/3

1 Answer

+1 vote
by (45.3k points)
selected by
Best answer

Correct option is (A) 1/3

Sample space = {HH,HT, TH} 

Required probability = 1/3

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.