q2 answer

numbers = [23, 12, 71, 10];
operators = [
  (a, b) => a + b,
  (a, b) => a - b,
  (a, b) => a / b,
  (a, b) => a * b];
var result = 1;
operators.forEach(function (op) {
  result = Math.floor(op(result, numbers[operators.indexOf(op)]));
});
console.log(result);