Answer: 12,620,256
Step-by-step explanation:
Given: The camera shop socks eight different types of batteries and there re at least 31 batteries of each type.
Here we want to select r= 31 batteries from n= 8 kinds of batteries, then formula we use to find number of ways is 

Hence, the number of ways can a total inventory of 31 batteries be distributed among the eight different types = 12,620,256
Answer:
if it's easy why dont you do it,that picture dont even take good
Answer:
30
Step-by-step explanation:
1/2 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
1/3 3 6 9 12 15 18 21 24 27 30
1/5 5 10 15 20 25 30