**Suppose that x, y, and z are int variables, and x = 10, y = 15, and z = 20. Determine whether the following expressions evaluate to true or false: a. !(x > 10) b. x <= 5 || y < 15 c. (x != 5) && (y != z) d. x >= z || (x + y >= z) e. (x <= y - 2) && (y >= z) || (z - 2 != 20)**

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```
```#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
int x = 10;
int y = 15;
int z = 20;
cout <<"!(x > 10) = "<<boolalpha << !(x > 10) << endl;
cout <<"x<=5||y<15 = " << boolalpha << (x <= 5 || y < 15) << endl;
cout <<"(x!=5)&&(y!=z) = " << boolalpha << ((x != 5) && (y != z)) << endl;
cout <<"x>=z||(x+y>=z) = " << boolalpha << (x >= z || (x + y >= z)) << endl;
cout << "(x<=y-2)&&(y>=z)||(z-2!=20) = " << boolalpha << ((x <= y - 2) && (y >= z) || (z - 2 != 20));
}