Conundrum

Strava Day 587. 

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Featured photo is T's Math notebook with the homework no one can solve. He sought help from Tito Freddy, Tita Raquel, Gramps and Google. Tried to solve it as well but couldn't.

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Might need to go with my cousins to ________ today so took an ice cold bath and had breakfast super early. 
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Grateful as always for good food, family, nature and space. 
Beau Jeudi (Lovely Thursday!).