top button
Flag Notify
    Connect to us
      Facebook Login
      Site Registration

Facebook Login
Site Registration

What is the probability that the fourth hat that he takes out at random will also be black?

0 votes
25 views

There are 20 white hats and 13 black hats in a box.
Neeraj randomly took 3 hats ( in succession) out of the box and did not put them in the box.
All three hats were black.
What is the probability that the fourth hat that he takes out at random will also be black?

posted Apr 12 by Anamika

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

10/30 = 33%...

answer Apr 12 by Jcm



Similar Puzzles
0 votes

A bag contain 5 blue and 4 black balls. Three balls are drawn at random. What is the probability that 2 are blue and 1 is black.

+1 vote

James Bond is caught up in a mysterious scenario where the evil villain has him blindfolded. He somehow breaks through the handcuffs but is unable to get the blindfold off. Upon searching, he comes across a bow and 3 arrows. He can hear the villain speak, and thus tries to take a shot at him. He launches the first arrow, it misses the villain. He then launches the second arrow and it misses by a greater margin.

What is the probability that this third shot our James Bond takes will be worse than the second shot?

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
...