document.write( "Question 859359: Mrs. Williams noticed that her in-laws' birth dates have an unusual property. Her mother-in-law was born 5-31-36, and her farther-in-law was born 9-25-34. Furthermore, her husband's grandfather was born 7-7-14. How many birth dates in a century have this property, in which the sum of the month and the day equal the value of the last two-digits of the birth year? \n" ); document.write( "

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Mrs. Williams noticed that her in-laws' birth dates have an unusual property.
\n" ); document.write( " Her mother-in-law was born 5-31-36, and her farther-in-law was born 9-25-34.
\n" ); document.write( " Furthermore, her husband's grandfather was born 7-7-14.
\n" ); document.write( " How many birth dates in a century have this property, in which the sum of the month and the day equal the value of the last two-digits of the birth year?
\n" ); document.write( ":
\n" ); document.write( "We know that all of them would occur between 02 and 43 yrs,
\n" ); document.write( "01-01-02 and 12-31-43
\n" ); document.write( ":
\n" ); document.write( "Anyway
\n" ); document.write( "12*31 = 372
\n" ); document.write( "Apr, Jun, Sep, Nov only 30 days subtract 4; 368
\n" ); document.write( "A normal Feb, subtract 3: 365 days,
\n" ); document.write( "the number or days in a year, that's interesting \n" ); document.write( "

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