How many years later the date is shown exactly as is shown in the calender, if the date in the wrist watch is not changed at the end of the months i.e feb, april, june, sept and nov.
2007-10-23 01:28:04 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
i have heard that this sort of problem may be solved by integer modulo. but i have no clear idea about this.
2007-10-23 01:36:40 · answer #1 · answered by Anonymous · 0⤊ 0⤋
I think what you're asking is how to figure out how long it will be until the next year that the same dates fall on the same day of the week.
If every year had the same number of days, the only possible answers would be "1 year" and "7 years", depending on whether or not the number of days in a year was divisible by 7.
If you assume a leap year occurs exactly every four years, you could probably work out a formula that wasn't too complex.
And that would be good enough to cover all the years from 1901 to 2099.
2007-10-24 02:29:54 · answer #2 · answered by Curt Monash 7 · 0⤊ 0⤋