Pattern to avoid nested try catch blocks?

Question

Consider a situation where I have three (or more) ways of performing a calculation, each of which can fail with an exception. In order to attempt each calculation until we f

Answer 1

Just to offer an "outside the box" alternative, how about a recursive function...

//Calling Code
double result = DoCalc();

double DoCalc(int c = 1)
{
   try{
      switch(c){
         case 1: return Calc1();
         case 2: return Calc2();
         case 3: return Calc3();
         default: return CalcDefault();  //default should not be one of the Calcs - infinite loop
      }
   }
   catch{
      return DoCalc(++c);
   }
}

NOTE: I am by no means saying that this is the best way to get the job done, just a different way