“Driver” word consists of 6 letters, so its code is 6 x 2= 12. “Pedestrian” word consists of 10 letters, so its code is 10 x 2= 20. “Accident” word consists of 8 letters, so its code is 8 x 2= 16. Similarly, “Car” word consists of 3 letters, so its code is 3 x 2= 6.