There are 71 audio files because each file likely contains a different piece of information or content. These files could be recordings of different lectures, interviews, conversations, or other types of audio content. The number 71 may simply reflect the amount of content that needed to be recorded and stored in audio format. Each file may serve a specific purpose or contain unique information, leading to the creation of multiple audio files. **

It depends on the quality and brand of the shoes. If the shoes are of good quality and from a reputable brand, then 71 euros for 2 pairs of shoes could be considered a good deal. However, if the shoes are of lower quality or from an unknown brand, then 71 euros might be considered expensive. It's important to consider the value and durability of the shoes before determining if the price is cheap or not. **

Streaming 22 refers to the act of continuously playing or watching content from the 22nd installment of a series, movie, or album. This could include streaming the 22nd episode of a TV show, the 22nd movie in a franchise, or the 22nd track on an album. It is a way for fans to show support for a particular piece of content and can also contribute to its success and popularity. **

Series 87 is a professional licensing exam for individuals who want to become Research Analysts. It is administered by the Financial Industry Regulatory Authority (FINRA) and covers topics such as financial analysis, valuation, and industry regulations. Passing the Series 87 exam is a requirement for individuals who wish to work as Research Analysts in the securities industry. Candidates can prepare for the exam by studying relevant materials and taking practice tests. **

Quaternium-87 is a quaternary ammonium compound that is commonly used in personal care products such as shampoos, conditioners, and hair styling products. It acts as a conditioning agent, helping to improve the texture and manageability of the hair. Quaternium-87 also has antistatic properties, helping to reduce frizz and flyaways. It is known for its ability to provide long-lasting conditioning effects, making it a popular ingredient in hair care formulations. **

Family 87 is a group of chemicals known as per- and polyfluoroalkyl substances (PFAS), which are widely used in consumer products and industrial applications. These chemicals have been linked to various health concerns, including cancer, immune system dysfunction, and reproductive issues. Family 87 includes compounds such as perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), which have been the subject of regulatory scrutiny and environmental remediation efforts due to their persistence and potential harm to human health and the environment. Efforts to regulate and phase out the use of PFAS chemicals, including those in Family 87, are ongoing to mitigate their impact on public health and the environment. **

Streit 87 is a historic building located in the Lower East Side of Manhattan, New York City. It was originally built as a matzo factory in 1925 by the Streit family, who were Jewish immigrants from Austria. The building is known for its distinctive red brick facade and its significance as a symbol of the Jewish heritage and history in the neighborhood. In 2015, the Streit's matzo factory closed and the building was sold, but it remains an important cultural and historical landmark in the area. **

87 is a positive integer. It is also an odd number and a prime number. In terms of its place value, 87 is in the tens and ones place, with 8 representing the tens and 7 representing the ones. **