Can you tell me the standard recommendation for the shelf-life of over-the-counter eye drops once opened? My drops both have expiration dates of about 14 months from purchase, but it states nothing about once it is opened. Are they safe to continue using after several months?
Mixed number. A mixed number is a whole number plus a fraction. Here are a few mixed numbers: 1 1/2 1 1/3 2 1/2 2 2/5 1 4/5 You can convert a mixed number to an improper fraction by finding the number of unit fractions in the whole number and then adding the fractional part of the whole number. This sounds hard, but it really isn't.
Composite Number. A composite number is a positive integer which is not prime (i.e., which has factors other than 1 and itself). The first few composite numbers (sometimes called composites for short) are 4, 6, 8, 9, 10, 12, 14, 15, 16, ... (OEIS A002808), whose prime decompositions are summarized in the following table.