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Sunday Times Teaser 3186 – Contemporary Classmates

by BRG on October 13, 2023

by Edmund Marshall

Published Sunday October 15 2023 (link)

In our local school, the year begins on September 1 and ends on August 31, and class one contains all the children who reach the age of five during the school year. I was looking back at the school records and discovered that one year during the 1980s, it so happened that the birthdays of a group of children in class one fell on the same-numbered day of different months and also on the same day of the week. The size of this group was the largest possible for these circumstances, and by coincidence the number of classmates in the group was also the number of the day in the month for their birthday. The oldest member of that group, whose birthday was in January, was born in the 1980s.

What was the full date of birth of the youngest member of that group?

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