Bookstore and BookSearch are the two entities for the given scenario.
Explanation:
- For the given Book.com virtual store, there can be two entities like Bookstore and BookSearch.
- Bookstore can have all the details of the books in the virtual store. hence the attributes can be
- Bookstore attributes: bookname, Authorname, Publisher, Publishedyear, Agegroup, category.
- BookSearch entity can be used to search the books in the virtual store.
- Booksearch attributes: bookname, category, bookid, authorname.
Answer:
23 ,21,10,63,13
Explanation:
We have to convert binary to decimal
10111 corresponding decimal number is

10101 corresponding decimal number is

01010 corresponding decimal number is

111111 corresponding decimal number is

001111 corresponding decimal number is

A has a comma then and so that isn't correct
B should be and I am
D should have an and in it
C is correct
Inspect them and make sure that they are exact copies then delete one if they are the same.