Product design question

How will you increase the number of users on TikTok?

Practice this question out loud. An AI interviewer asks it, follows up like a real interviewer would, and scores your answer. Type or speak.

What this question tests

Tests product improvement thinking for a growth stage social app: identifying a specific lever to expand the user base beyond its core demographic.

Identify TikTok's current core demographic, skewing younger, and the growth opportunity in older or more international demographics.
Identify the barrier for underrepresented segments, such as older users finding the content style unfamiliar or feeling out of place.
Propose a targeted feature, like content categories or a discovery mode tailored to interests common among older or new users, for example cooking or DIY.
Address international growth as another lever, localized content and creator incentives in underpenetrated markets.
Define success: net new users from the targeted segment and their 30 day retention versus the existing core base.
State the assumption about which growth lever, demographic expansion or geographic expansion, you are prioritizing.

Picks one specific lever, expanding into an underrepresented demographic like users over 35, rather than a vague statement about growing everywhere.
Proposes a concrete onboarding change, an interest based discovery mode surfacing content like cooking or home improvement that resonates with the target segment.
Addresses creator incentives as a supply side lever, since content relevant to the new segment needs creators making it in the first place.
Sets a measurable goal, for example a stated increase in net new users and 30 day retention within the targeted demographic.

Proposing generic growth tactics like more advertising without identifying a specific underrepresented segment and their barrier to adoption.
Ignoring the supply side, since new user growth needs relevant content and creators already active for that segment.

How would you validate that this segment is actually interested in the content style TikTok offers?
What would you measure to know the new segment is sticking, not just trying the app once?