Some triangles are not isosceles. Identify the Venn diagram

Let $A$ be the set of vectors $a=\left(a_1,a_2,a_3\right)$ satisfying ${\left(\sum _{i=1}^3\frac{a_i}{2^i}\right)}^2=\sum _{i=1}^3\frac{a_i^2}{2^i}$. Then,

$\mathrm{I}$ No Hut is a cottage
$\mathrm{II}$ Some buildings are Huts

Some cars are towns.
Some towns are flowers
All Plants are flowers

Conclusion : 

$\mathrm{I}$ No plant is a car
$\mathrm{II}$ Some cars are flowers

In the given Venn diagram $n\left(A\right)$ is

The shaded region in the given figure shows _____

In a school, there are three types of games to be played. Some of the students play two types of games, but none play all the three games. Which Venn diagrams can justify the above statement?