1. Hiro has 1/9 chance ( that means 1 out of 9 times) divide 108 by 9 to get total number of wins: 108 /9 = 12 wins. Answer is A
2. multiples of 3 are 3, 6 ,9 , so 3 numbers are multiple of 3, numbers that are not multiple of 3 = 10-3 = 7, so there would be a 7/10 chance. Answer is A.
3. for probability, 1 would be equal to 100% so a probability of 1 would be a likely event happening. The answer would be C
4. find the average and divide, the answer would be D. 5