Calculate the average number of mutual follows for a typical TikTok user.

This question prompts you to infer or deduce something that you may not immediately know. The interviewer is essentially asking you to provide an informed estimation or educated guess based on the data and information at your disposal. The purpose of this question is to evaluate your ability to make reasonable assumptions and engage in logical reasoning. In order to respond to this question, you will need to outline a step-by-step reasoning process that demonstrates how you arrived at your estimate and clarify the assumptions you have made. Keep the following key points in mind: Typical user: Consider the characteristics of an average user. Are they likely to be teenagers or adults? How frequently do you think they use TikTok? Mutual follows: In this context, a 'friend' refers to someone who both follows the user and is followed by them. It might be helpful to examine similar platforms to gauge the average number of friends a user typically has. Scope of TikTok Users: Take into account the global presence of TikTok and how it might influence the number of friends a user could have.

According to various demographic statistics, most TikTok users are teenagers and young adults. These individuals tend to have a larger circle of friends compared to older users. For instance, a typical young person may have about 500-600 friends on social media. However, not all of these friends are likely to be active on TikTok or following the user in return. Therefore, we can estimate that around half of those friends are mutual followers on TikTok. By reducing the number to roughly 50% due to differing platform preferences and usage, we can conclude that an average TikTok user may have approximately 250-300 mutual followers or 'friends'.

Let's say that a typical TikTok user is a teenager or young adult who frequently engages with the platform. Based on my own experiences and observations, the number of friends that individuals in this age group have on social media can range considerably, from a few dozen to several thousand. However, it's important to note that not all of these acquaintances are likely to be active on TikTok. To reflect this, we could reduce the number by a certain percentage. Assuming that 30%-40% of these friends are also mutual followers on TikTok, if we take an average of 500 friends on general social media, an average TikTok user might have approximately 150-200 mutual followers. Naturally, this can vary widely among different users, but this estimate appears to be reasonable.