16. The number of goals scored in a series of football matches was as follows: 1 2 3 Number of goals Number of matches 8 8 X SC SC 1 (a) If the mean number of goals is 2.04, find x. (b) If the modal number of goals is 3. find the smallest possible value of x. (C) If the median number of goals is 2, find the largest possible value of r. 17. In a survey of the number of occupants in a number of cars, the following data resulted. 1 2 3 4 Number of occupants Number of cars 7 11. 7 x (a) If the mean number of occupants is 21, find x. (b) If the mode is 2, find the largest possible value of x. (C) If the median is 2, find the largest possible value of x. 18. The numbers 3, 5, 7, 8 and N are arranged in ascending order. If the mean of the numbers is equal to the median, find N. 19. The mean of 5 numbers is 11. The numbers are in the ratio S 1:2:3:4:5. Find the smallest number. 20 The mean of a set of 7 numbers is 3.6 and the mean of a different set of 18 numbers is 5.1. Calculate the mean of the 25 numbers.
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