Estimation question

What is the revenue of Bing?

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

Fermi estimation using search volume and ad monetization rates.

Estimate Bing's search query volume as a fraction of Google's, using a rough market-share assumption, e.g. 5 to 10%.
Estimate revenue per search benchmarked loosely against Google's known ad monetization rate.
Multiply queries per day by revenue-per-search by days in a year to estimate annual revenue.
Sanity-check against the general knowledge that the parent company reports a search advertising segment.
State the final number as a range, not a single figure.
Flag which assumption drives the most uncertainty.

Anchors on market share relative to the category leader rather than guessing query volume directly.
Uses a defensible revenue-per-search benchmark instead of an arbitrary number.
Cross-checks the result against general knowledge of a reported search advertising segment.
Presents a range, acknowledging both market share and revenue-per-search are rough assumptions.

Guessing an absolute dollar figure with no visible market-share or revenue-per-search reasoning.
Ignoring that the competitor's ad monetization rate may differ from the leader's.

Chapters of the AI PM course that teach what this question tests.