2

Part of 2013 May Olympiad

Problems(2)

May Olympiad 2013, Level 2, Problem 2

Source:

Construct the midpoint of a segment using an unmarked ruler and a trisector that marks in a segment the two points that divide the segment in three equal parts.

ages problem Elisa and grandpa May Olympiad (Olimpiada de Mayo) 2013 L1 P2

Source:

Elisa adds the digits of her year of birth and observes that the result coincides with the last two digits of the year her grandfather was born. Furthermore, the last two digits of the year she was born are precisely the current age of her grandfather. Find the year Elisa was born and the year her grandfather was born.

algebraDigitsnumber theory