Re: Simple probability questions

Posted by Arushi :)) on Mar 24, 2014; 5:32pm
URL: http://discussion-forum.276.s1.nabble.com/Simple-probability-questions-tp7585428p7585444.html

For third,
what i did is
p( either 53 sundays or 53 mondays)= p( 53 sundays)+ p(53 mondays)- p( 53 sundays & 53 mondays)
Now again p of 53 sundays = 2/7 , because the full weeks should start from saturday or sunday.
p of 53 mondays = 2/7
for p of 53 Sundays & 53 mondays we have just one way.
i.e . the full week must start from saturday . and that has probability of 1/7
this gives,
2/7+2/7-1/7 = 3/7
I saw the answers and then made this explanation :P
@ ron/ anjali, is it correct??