Answer:
x=9
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
No, because they're in the same place value
Hope this is helpful
Answer: A proper subset is a subset that is not identical to the original set—it contains fewer elements. You can see that there are 16 subsets, 15 of which are proper subsets. Listing the sets is fine if you have only a few elements.