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Easy · Brain Teasers & Logic · Numerical · ~3 min · #112

Right Angles on a Clock

Real interview · WorldQuant

How many times in a 24-hour day do the hour and minute hands of an analog clock form a right angle?

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Worked solution

Give the problem an honest attempt first, then reveal the full explanation.

Reported in interviews

Candidate-reported and unverified; the firm may phrase it differently or no longer ask it. The wording here is our own paraphrase, and the solution was written and checked independently of any answers posted at the source.

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