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22 Sep 2025, 01:33
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Hey everyone,
I’m in the middle of prepping for the GMAT, and I’ve hit a bit of a wall with the Data Interpretation section. I’m not sure if it's just me, but I feel like some of these questions are so tricky! They seem simple at first, but when I really start digging into the details, I get stuck.
I came across this question the other day that really threw me off, and I’d love some advice on how to improve my approach. Here’s the question:
The Problem (simplified):
For each of the last 100 days at a certain factory, Light A was either on or off, and likewise for Light B. Every time Light A was off, Light B was also off, and every time Light B was on, Light A was also on. Additionally:
I’m in the middle of prepping for the GMAT, and I’ve hit a bit of a wall with the Data Interpretation section. I’m not sure if it's just me, but I feel like some of these questions are so tricky! They seem simple at first, but when I really start digging into the details, I get stuck.
I came across this question the other day that really threw me off, and I’d love some advice on how to improve my approach. Here’s the question:
The Problem (simplified):
For each of the last 100 days at a certain factory, Light A was either on or off, and likewise for Light B. Every time Light A was off, Light B was also off, and every time Light B was on, Light A was also on. Additionally:
- For exactly 40 of the last 100 days, at least one of the lights was on.
- For exactly 20 of the last 100 days, both lights were on.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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22 Sep 2025, 01:43
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Demonicgod
This question is discussed here: for-each-of-the-last-100-days-at-a-certain-factory-light-a-w-429087.html. Please go through that discussion, and if anything is still unclear, post your follow-up in that same thread.
This topic is locked and archived.
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Graphs and Tables (G&T) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
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