Permutations and Combinations

(b) How many 4-digit numbers formed in 11. In city A, the year of a coin made will be stated on the coin. Kenny has 5 $1 coins with different years, 6 $2 coins with different years and 3 $5 coins with different years. If Kenny draws exactly 4 coins, find the numbers of ways that the total values of the coins are (a) $6, (2 marks) (b) $11, (2 marks) (c) $8. (3 marks) Th 10