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# How to implement random generator to my quiz

I have the code below, it's quite similar to Dave's one. I would like to make it works like choosing the questions randomly. I only know that I need to use Math.floor( Math.random()) function, but I don't know how. Because if I target the [i][0] element of the array with teh random function, how can I target the connecting answer? I need an assistance. Thanks for your answer in advance.

function print(message) { document.write(message); }

var questQ = [ [" 4x1",4], [" 4x2",8], [" 4x3",12], [" 4x4",06], [" 4x5",20], [" 4x6",24], [" 4x7",28], [" 4x8",32], [" 4x9",36], [" 4x10",40] ]; var correctAns =0; var goodOnes = []; var wrongOnes = [];

for (var i=0; questQ.length>i; i+=1){ var question = parseInt(prompt(questQ[i][0])); var answer = parseInt(questQ[i][1]); if (answer === question){ correctAns +=1; goodOnes.push(i + ". " + questQ[i][0]); } else { wrongOnes.push(i + ". " + questQ[i][0]); } }

var html = "Out of ten question " + correctAns + " were good" + "<br></br>"; print(html);

print("Good ones: " + "<br></br>" + goodOnes + "<br></br>"); print("Wrong ones: " + "<br></br>" + wrongOnes);

Just like you are doing now by picking the indexes in sequence, you just pick an index using random and then use that same index for both the question and the answer.

```for (var i=0; questQ.length>i; i+=1) {
```for (var c=0; c<10; c++) {