# Estimate the number of trains operating in the NYC subway. | Aced

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Source: https://www.aced.io/questions/769/estimate-trains-nyc-subway
Source observed: 2026-11-05T01:40:49.215Z
Last checked: 2026-11-05T01:40:49.215+00:00
Indexed: 2026-11-07T03:18:28.866+00:00

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# Estimate the number of trains operating in the NYC subway.

We provide interview-preparation resources through Aced, formerly Exponent. This question is a practice estimation prompt associated with **Google** and categorized under **Estimation** and **System Design**.

## Question details

- **Reported last asked:** 5 years ago
- **Company:** [Google](https://www.aced.io/questions?company=google)
- **Categories:** [Estimation](https://www.aced.io/questions?type=estimation), [System Design](https://www.aced.io/questions?type=system-design)
- **Interview count:** 2 interviews

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