For count digits, you could just convert it to a String and check the length
Sum digits, convert to string then seperate each character with charAt then convert it to numbers in the return statement.
Average digits you can convert it to a String and then convert them back after taking them apart.
Answer:
Anything that doesn't have to do with food (including water), shelter, or clothing.
For Example: Going to the pool is not a need, going on vacation is not a need etc. etc.
Hope this helps
Explanation: