estimation question

While celebrating the U.S. holiday Halloween, I announced an estimation question contest. As you might recall, I posed the following question: “In today’s New York Times, I learned that in the weeks leading up to this holiday, Americans purchased $2.7 BILLION dollars in candy. So here’s my challenge for you. Assuming all of that candy [...]

Last night, I took my kids out for an American children’s holiday known as Halloween. Kids (and some ahem… adults) dress up in costume (I was a penguin this year), go door-to-door, saying “Trick or Treat” and get free candy from the neighbors. My three kids brought back a record 420 pieces of candy.  In [...]

I was asked the following management consulting estimation question by a McKinsey interviewer many years ago: “Estimate how long it would take to move or relocate an average size mountain 10 miles using an average size truck” You may NOT ask any clarifying questions. Any answer that does not include a specific amount of time [...]

Question: The below case resulted in the feedback of that I am really analytical and smarter than most people in their office but too detailed approach not being able to creatively quickly change thinking on the spot, also they mentioned if something like this happens  you need to interaction with the interviewer to come to [...]