Control Instructions - General Questions

What is the output of the following program?

int x = 15;
if (x % 3 == 0 && x % 5 == 0) Console.Write("FizzBuzz");
else if (x % 3 == 0) Console.Write("Fizz");
else Console.Write(x);

What is the output of the following program?

int day = 2;
switch (day)
{
    case 1: Console.Write("Mon"); break;
    case 2: Console.Write("Tue"); break;
    default: Console.Write("?"); break;
}

Can the loop variable of a foreach be assigned inside the loop?

What is the output of the following program?

int count = 0;
for (int i = 0; i < 3; i++)
    for (int j = 0; j < 2; j++)
        count++;
Console.WriteLine(count);

What is the output of the following program?

string r = 5 switch { < 0 => "neg", 0 => "zero", _ => "pos" };
Console.WriteLine(r);