Codecademy: Codeyear Odds Continued: Double Trouble

//sample solution


var isDouble = 0;
var totalCombos = 0;
var probability;

//Here we walk through all possible outcomes of two 6 sided die
for(i = 1; i < 7; i++){
    for(y = 1; y < 7; y++){
if(i===y){
isDouble++;
}
totalCombos++;
  }
}
//Now find what the probability was
probability = isDouble/totalCombos;
console.log("The probability of rolling doubles is " + probability+
           " or "+isDouble+"/"+totalCombos);