A Simple Puzzle that Stumped Many of the Brightest Minds – Can You Solve It?

2016-05-11 00.36.43

Yesterday, my friend gave me this interesting puzzle, which he said was one of the most difficult interview questions he had seen.

I immediately gave 30 as the answer, but he said that it was wrong.

Can you figure out the trick? 😀

P.S. I will be revealing the answer very soon, so stay tuned! In the meantime, feel free to post your answers below!

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About the author

Spencer Li is a trader, investor and entrepreneur who currently manages his own portfolio of stocks, REITs, currencies, cryptocurrencies, properties, and businesses. As a former professional in private equity and proprietary funds, he has over 10 years of market experience, and has been featured on more than 20 occasions in the media. As an international speaker and avid globetrotter, he has travelled to over 50 countries to spread his knowledge.

 

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