Question 1a
#include <cstdlib>
#include <iostream>
#include <time.h>
using namespace std;
  
int main()
{
    
        int r, i;
        srand(time(NULL));

        for(i=0;i<10;i++){
                r=rand()%5*2+1;
                cout << r << "\t";
        }
        cout << endl;


    return 0;
}

Question 1b
#include <cstdlib>
#include <iostream>
#include <time.h>
using namespace std;

int main(){

        int r, i;
        srand(time(NULL));

        for(i=0;i<100;i++){
                if(i%10==0)
                        printf("\n");
                r=rand()%90+10;
                printf("%d\t",r);
        }
        printf("\n");
        return 0;
}

Question 2
#include <cstdlib>
#include <iostream>
#include <time.h>
using namespace std;
  
int main()
{
    
        int r, i;
        srand(time(NULL));

        for(i=0;i<100;i++){
                if(i%10==0)
                        cout << endl;
                r=rand()%90+10;
                cout << r << "\t";
        }
        cout << endl;


    return 0;
}
Question 3
#include <cstdlib>
#include <iostream>
#include <time.h>
using namespace std;
  
int main()
{
    
        int balance=100, invest, guess, d1, d2, d3, outcome;

        cout << "Let's start to play the game with 3 dices" << endl;
        cout << "Your balance = " << balance << endl;
	  do{
        	do{
                	cout << "How much do you invest? ";
                	cin >> invest;
        	}while(invest>balance);

	        do{
	                cout << "What is your expected outcome, big (1) or small (0)? ";
	                cin >> guess;
	        }while(guess!=0&&guess!=1);

	        d1=rand()%6+1;
	        d2=rand()%6+1;
	        d3=rand()%6+1;

	        cout << "The points of the 3 dices are " << d1 << "," << d2 << "," << d3 << "." << endl;
	        if((d1+d2+d3)>10){
	                outcome=1;
	                cout << "It is big, ";
	        }
	        else{
	                outcome=0;
	                cout << "It is small, ";
	        }
	        if(guess==outcome){
	                cout << "a correct guess" << endl;
	                balance = balance + invest;
	        }
	        else{
	                cout << "an incorrect guess" << endl;
	                balance = balance - invest;
	        }
	        cout << "Your balance = " << balance << endl;
	}while(balance>0);

    return 0;
}