C language simple questions

1:

Use this snippet of code to answer the question below:

int multi_array[2][6] = {{10000, 2, 3, 9, 10, 10}, {7, 8, 9, 9, 1999, 0}}; int size = sizeof(multi_array);

What is the value of size?

2:

Use this snippet of code to answer the question below:

int x, *p = &x;

x = 100; p = p * 2;

printf("The value of x is %d. ", x);

What is the output? (And why?)

3:

Assume you have declared a multi-dimensional array char ma[5][30]. What is the address of the element "ma[0][0]"? Use two (2) different ways to assign the address to a new pointer variable, p. (Do not give a concrete address for ma[0][0] - this will vary each time the program is run, based on the memory allocated.)