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Problem Of The Week 37

with 4 comments


What is the sum of the smallest and the largest number of fridays the 13th that can occur in any year ?

Written by Implex

October 1, 2008 at 8:55 pm

4 Responses

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  1. max number:3
    min number:1

    correct????

    Ankaj

    October 2, 2008 at 2:39 am

  2. answer is correct , put a solution man !!🙂

    outtimed

    October 2, 2008 at 5:03 am

  3. well i just calculated those…

    in leap year…there can be minimum of 1 friday…and in any other year..we always have Feb and March with same days…the other one comes in nov…
    😦
    13+28K…will result in Friday….

    Ankaj

    October 2, 2008 at 6:24 am

  4. For 13 th of a month to be a friday , first day of that month will have to be sunday. The max and min possibilities for any day to be the first day of the month in a year are 3 and 1 respectively. Hence the sum = 3+1=4

    tyro

    October 2, 2008 at 8:16 am


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