## 213. Math Puzzle $2 / 83$

Michael wishes his uncle a happy birthday, hoping that he may live to be at least 3 Gs old. How many years does this wish correspond to?

(1 Gs $=1$ Gigasecond $=10^{9}$ )
3 Gigaseconds $=3 \cdot 10^{9} \mathrm{~s}=95.13$ years.

$\left(1 \mathrm{day}=24 \cdot 3600 \mathrm{~s}=86.4 \cdot 10^{3} \mathrm{~s}, 1 \mathrm{year}=365 \cdot 86.4 \cdot 10^{3} \mathrm{~s}=3.154 \cdot 10^{7} \mathrm{~s}\right)$

The uncle should therefore be at least 95 years old.