Estimation question

Estimate the number of videos watched on YouTube per day.

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

Structured estimation using platform-level assumptions and a clear breakdown by user segment.

Clarify scope: total video views globally per day, counting any playback start as a view.
Estimate YouTube's daily active users, roughly 1 to 2 billion globally (assumption).
Estimate average videos watched per active user per day, likely 5 to 10 given short clips and longer content mixed together.
Multiply: 1.5 billion users times about 7 videos equals roughly 10 billion daily views.
Sanity check against known scale: YouTube is known to serve billions of views daily (common knowledge), so this order of magnitude is reasonable.
State the final range clearly, roughly 5 to 15 billion videos per day.

States DAU and per-user video count as explicit assumptions before multiplying (assumption).
Shows the multiplication step clearly rather than jumping to a final figure.
Lands in a defensible range, single digit to low double digit billions, consistent with YouTube's known massive scale.

Confusing views with unique videos uploaded, a very different number.
No stated DAU assumption before multiplying.
Giving an implausibly small number like millions, ignoring YouTube's known global scale.

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