Why 7?

Question

https://code.sololearn.com/W3l9xd3b1P6H/?ref=app

Answer 1

var arr = [1,4,6,4,2];
for (var i = 0; i < 3; i++) {
arr[i] += arr[i+2];
}
document.write(arr[0]);

arr[0] = arr[0] + arr [2] that is mean :
arr[0] = 1 + 6

because index is started from 0 so the second index is 6. that is why the result is 7.

Answer 2

because everyone is tired of g6

Answer 3

@Agus Mei good explanation.

Answer 4

https://code.sololearn.com/WFcv769O82mg/?ref=app