"There are 18 possible numbers.
The numbers which are even and/or a multiple of 3 are:{2, 3, 4, 6, 8, 9, 10,12,14,15,16,18}There are 12 numbers which are even or a multiple of 3.The probability of landing on a number which is even or a multiple of 3 is 12/18 which equals 2/3.
The numbers which are odd numbers or between 4 and 15 are:{1,3,5,6,7,8,9,10,11,12,13,14,15,17}There are 14 numbers which are odd or between 4 and 15.The probability of landing on one of these numbers is: 14/18 which equals 7/9."
