for
function filteredArray(arr, elem) { let newArr = []; // Only change code below this line for (let i = 0; i < arr.length; i++) { if (arr[i].indexOf(elem) == -1) { newArr.push(arr[i]); } } // Only change code above this line return newArr; } console.log(filteredArray([[3, 2, 3], [1, 6, 3], [3, 13, 26], [19, 3, 9]], 3));