How many different TWO-letter passwords can be formed from the letters abcdefg of no reputation of the letters is allowed
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There approximately 7133 books in the library;
Data;
- Let the number of total books = x
- Number of fictional books = 3/4x
To solve this problem, we simply need to use an equation to explain the word problem into mathematical statements.
Let the total number of books be represented by x
The number of fictional books = 3/4x
After 592 fictional books were donated;
Let collect like terms and solve
There approximately 7133 books in the library;
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