Question 3
A unit of blood expires after $$
10! = 10 \cdot 9 \cdot 8 \cdots 1
$$ seconds. Yasin donates a unit of blood at noon on January $1.$ On what day does his unit of blood expire?
10! = 10 \cdot 9 \cdot 8 \cdots 1
$$ seconds. Yasin donates a unit of blood at noon on January $1.$ On what day does his unit of blood expire?