protected override Question GenerateQuestion()
{
double a = 0;
double b = 0;
double c = 0;
MathAPI.MMSelectRandom(ref a, ref b, ref c, this.maxNumber, this.maxNumber, 0);
Operator op = Operator.Multiply;
Random key = new Random();
Random rand = new Random(4 * key.Next());
int randOpIndex = rand.Next();
randOpIndex = randOpIndex % 2;
if (randOpIndex == 0)
{
op = Operator.Multiply;
}
else
{
op = Operator.Division;
double temp = a;
a = c;
c = temp;
}
return(new Question_a_b_c((int)a, (int)b, (int)c, op));
}
private Question GenerateMD()
{
double a = 0;
double b = 0;
double c = 0;
MathAPI.MMSelectRandom(ref a, ref b, ref c, this.maxNumber, this.maxNumber, 0);
Operator op = Operator.Multiply;
Random key = new Random(DateTime.Now.Second);
Random rand = new Random(DateTime.Now.Second * key.Next(1234));
int randOpIndex = rand.Next(99);
randOpIndex = randOpIndex % 2;
if (randOpIndex == 0)
{
op = Operator.Multiply;
}
else
{
op = Operator.Division;
double temp = a;
a = c;
c = temp;
}
return(new Question_a_b_c((int)a, (int)b, (int)c, op));
}
protected override Question GenerateQuestion()
{
double a = 0;
double b = 0;
double c = 0;
MathAPI.MMSelectRandom(ref a, ref b, ref c, 9, 9, 0);
Operator op = Operator.Multiply;
return(new Question_a_b_c((int)a, (int)b, (int)c, op));
}
protected override Question GenerateQuestion()
{
int a = 0;
int b = 0;
int c = 0;
MathAPI.MCSelectRandom(ref a, ref b, ref c, this.maxNumber, 0);
Operator op = Operator.Plus;
if (a - b == c)
{
op = Operator.Minus;
}
return(new Question_a_b_c(a, b, c, op));
}
