Need with all of them , do as much as you can !

I believe these are all of the correct answers

1. You are correct with the 5

2. 46/3 or 15.33333

3. 84/5 or 16.8

4. 35/9 or 3.8888...

5. 100/9 or 11.11111...

6. 15/4 or 3.75

7. 6/15 or 0.4

8. 1/15 or .066666...

9. 4/21 or 0.190476

10. 15/66 or 0.227273

11. 1/3 or .33333

12. also 1/3

13. 3 21/32

14. 2 5/36

15. 1 19/40

16. 7/20

17. 4 14/15

18. 15 1/8

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

probability for j is 1/4

while

a is 1/6