top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration Why to Join

    Get Free Puzzle Updates

Facebook Login
Site Registration

What is the probability that both balls are red?

0 votes
139 views

There are four colored balls in a hat: two red, one black and one blue. After pulling out two of them, you know that one of them is red, but you do not know which one. What is the probability that both balls are red?

posted Oct 1, 2014 by Rajni

Share this puzzle
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button

1 Answer

–1 vote

PROBABALITY OF BOTH BALLS ARE RED ARE
(2 / 4) * (2 /4)
=( 1/ 2) * ( 1/2)
=1/4

answer Nov 4, 2014 by Dheeraj Kumar



Similar Puzzles
0 votes

A bag contains Red Balls and Black Balls. Two balls are drawn without replacement. The probability that both the balls drawn are red is 1/2. What is the minimum number of Red and Black Balls for which this probability is satisfied?

+1 vote

A bag contains 5 white, 4 red and 3 black balls. A ball is drawn at random from the bag, what is the probability that it is not black?

0 votes

A box contains 4 red balls, 6 green and 8 black balls. Three balls are drawn at random find the probability that three balls are of different color?

Contact Us
+91 9880187415
sales@queryhome.net
support@queryhome.net
#280, 3rd floor, 5th Main
6th Sector, HSR Layout
Bangalore-560102
Karnataka INDIA.
QUERY HOME
...