Difference between revisions of "1994 AJHSME Problems/Problem 12"
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A lucky year is one in which at least one date, when written in the form month/day/year, has the following property: ''The product of the month times the day equals the last two digits of the year''. For example, 1956 is a lucky year because it has the date 7/8/56 and <math>7\times 8 = 56</math>. Which of the following is NOT a lucky year? | A lucky year is one in which at least one date, when written in the form month/day/year, has the following property: ''The product of the month times the day equals the last two digits of the year''. For example, 1956 is a lucky year because it has the date 7/8/56 and <math>7\times 8 = 56</math>. Which of the following is NOT a lucky year? | ||
<math>\text{(A)}\ 1990 \qquad \text{(B)}\ 1991 \qquad \text{(C)}\ 1992 \qquad \text{(D)}\ 1993 \qquad \text{(E)}\ 1994</math> | <math>\text{(A)}\ 1990 \qquad \text{(B)}\ 1991 \qquad \text{(C)}\ 1992 \qquad \text{(D)}\ 1993 \qquad \text{(E)}\ 1994</math> | ||
Revision as of 14:40, 15 August 2011
Problem
A lucky year is one in which at least one date, when written in the form month/day/year, has the following property: The product of the month times the day equals the last two digits of the year. For example, 1956 is a lucky year because it has the date 7/8/56 and 
. Which of the following is NOT a lucky year?
