Which of the following operations cannot be performed on pointers in C?

Consider the following C declaration:

struct{

short S[$5$];

union{

float y;

long z;

}u;

}t;

Assume that objects of the type short, float and long occupy $2$ bytes, $4$ bytes, $8$ bytes, respectively. The memory requirement for variable t, ignoring alignment considerations, is

The recurrence relation
$T\left(1\right) = 2$

$T\left(n\right) = 3T \left(\frac{n}{4}\right)+n$
It has a solution $T\left(n\right)$ equal to: