Question

$10,10,10,10,8,8,8,8,12,12,11,y$
The twelve numbers shown represents the ages, in years, of the twelve houses on a certain city block. What is the median age, in years, of the twelve houses on the block?
______ years

Answer 1

The correct answer is $10$. The above $12$ figures represent the age of $12$ houses on a street, and ask for the median. The given series are arranged from large to small . $12$ digits and the middle $2$ digits are added by $2$ and the median. There is an unknown number $y$ in the series ${}^{\prime }{y}^{\prime }$, but we can reason that the value $y$ is $10$

$\therefore \frac{10+10}{2}=10$