Need only solution for B5, B4 can be ignored

B4. The following table shows the number of cars sold by a car dealer in the past 8 years with the three-year moving average and the five-year moving average. Year Number of cars sold (in thousand) Three-year moving average (in thousands) Five-year moving average (in thousands) 2013 -- -- 2014 25.9 25.6 2015 30.3 C E 2016 38.6 38.4 39.2 46.5 2017 B D 2018 54.9 54.6 F 2019 61.6 62.6 67.3 2020 Calculate the missing values of A, B, C, D, E and F (correct to 1 decimal place). (Total 6 marks) B5. The password of a locker contains 3 digits and each digit can use a number from 0 to 9. Find the number of passwords that can be formed if (a) there is no restriction; (2 marks) (b) each number can be used once only; (2 marks) (c) the number is an even number and each number can be used once only. (2 marks) (Total 6 marks)