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

    Get Free Puzzle Updates

Facebook Login
Site Registration

How many people had all four items?

+1 vote
38 views

Out of 100 people surveyed, 75 percent had a personal computer, 68 percent had a dishwater, 85 percent had a refrigerator and 80 percent had a video recorder.
How many people had all four items?

posted Mar 11 by Balwinder

Share this puzzle
Facebook Share Button Twitter Share Button Google+ Share Button LinkedIn Share Button Multiple Social Share Button
Pl tell the correct Answer

2 Answers

0 votes

34 people


100*0.75*0.85*0.68*0.8= 34

answer Mar 11 by Hanifa Mammadov
0 votes

For 8 people, the logic is :
(Is my logic OK ?)

Out of 100 people,
-25 did not have PC,
-32 did not have DW
-15 did not have fridge
-20 did not have VC
Hence number of people having all the four are


But is there a loophole in above.
Numbers can not be added as some could be common, but not have 2 or 3 or any of the items.
If you go by probability theory then the answer is 34.68%

answer Mar 12 by anonymous
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
...