Suppose everyone in the class chose a secret 3-digit PIN number.
What is the probability that everyone chooses a different number?
Assume there are 120 students in the class.
More Puzzles
Blog Archive
-
►
2008
(84)
- March 2008 (19)
- April 2008 (2)
- May 2008 (2)
- July 2008 (4)
- August 2008 (6)
- September 2008 (10)
- October 2008 (10)
- November 2008 (5)
- December 2008 (26)
-
►
2009
(73)
- January 2009 (16)
- February 2009 (6)
- March 2009 (6)
- April 2009 (8)
- May 2009 (5)
- June 2009 (6)
- July 2009 (5)
- August 2009 (4)
- September 2009 (4)
- October 2009 (2)
- November 2009 (4)
- December 2009 (7)
-
►
2010
(28)
- January 2010 (1)
- February 2010 (4)
- March 2010 (5)
- April 2010 (4)
- May 2010 (2)
- June 2010 (1)
- July 2010 (1)
- August 2010 (2)
- September 2010 (1)
- October 2010 (1)
- November 2010 (2)
- December 2010 (4)
-
►
2011
(25)
- January 2011 (3)
- February 2011 (4)
- March 2011 (3)
- April 2011 (3)
- May 2011 (1)
- June 2011 (1)
- July 2011 (1)
- August 2011 (3)
- September 2011 (1)
- October 2011 (2)
- November 2011 (2)
- December 2011 (1)
-
►
2012
(10)
- January 2012 (2)
- March 2012 (1)
- April 2012 (1)
- May 2012 (1)
- July 2012 (1)
- September 2012 (1)
- October 2012 (1)
- November 2012 (1)
- December 2012 (1)
-
►
2013
(1)
- November 2013 (1)
-
►
2014
(12)
- February 2014 (3)
- March 2014 (1)
- April 2014 (1)
- May 2014 (1)
- September 2014 (1)
- October 2014 (1)
- November 2014 (3)
- December 2014 (1)
-
▼
2015
(52)
- January 2015 (8)
- February 2015 (13)
- March 2015 (7)
- April 2015 (4)
- May 2015 (3)
- June 2015 (1)
- July 2015 (2)
- August 2015 (2)
- September 2015 (3)
- October 2015 (4)
- November 2015 (3)
- December 2015 (2)
-
►
2016
(13)
- January 2016 (2)
- February 2016 (1)
- April 2016 (1)
- May 2016 (5)
- June 2016 (2)
- October 2016 (1)
- December 2016 (1)
-
►
2017
(3)
- February 2017 (3)
2 comments:
The probability of no two classmates sharing a pin is precisely 0.058568541372558%. Slim indeed.
The probability of no two classmates sharing a pin is precisely 0.058568541372558%. Slim indeed.
Post a Comment