Friday

May 27, 2016
Posted by **bob** on Thursday, November 15, 2012 at 10:28am.

- math -
**Anonymous**, Saturday, November 24, 2012 at 9:10am20

- math -
**Anonymous**, Tuesday, January 1, 2013 at 5:49pm1/10000000000000000000000

- math -
**random bored person**, Tuesday, July 30, 2013 at 7:05pmy'all are soooooooooooooooooooooooooooooo stupid. Anonymous is right

- math -
**anounymos**, Sunday, November 17, 2013 at 7:08pmiT IS 20

- math -
**Trueshot**, Thursday, January 2, 2014 at 7:57pmActually, it isn't. It's a fraction answer. :)

- math -
**Anonymous**, Friday, April 25, 2014 at 4:34pmI think it's 19/240

- math -
**Anonymous**, Sunday, July 27, 2014 at 1:21pmits 19/240

- math -
**merp**, Tuesday, November 17, 2015 at 7:17pmFirst, we compute the total number of possible times that can show. There are 12 possible hours, and 60 possible minutes, so the total number of possible times is 12*60 = 720.

Now we compute the number of palindromes. There are 6 palindromes per hour for the nine hours 1 through 9 (1:01, 1:11, 1:21, 1:31, 1:41, 1:51 for example). There is one palindrome per hour from 10 through 12, namely 10:01, 11:11, and 12:21. Hence, the number of palindromes is 6*9 + 3 = 57.

Therefore, the probability that the time is a palindrome is 57/720 = 19/240