You don’t necessarily come across brain teaser questions, but you have to be prepared, as they are quite popular in investment banking interviews. Don’t worry if you can’t produce an answer. This is a way to see how you deal with stress. Even if you don’t know the answer, it is a strategy to voice out your analysis and calculations to let the interviewer know your logic and how good your analytical thinking is.
To save my time in writing, I have found some popular questions for your practice.
Come back and check the answers tomorrow.
Three envelopes are presented in front of you by an interviewer. One contains a job offer, the other two contain rejection letters. You pick one of the envelopes. The interviewer then shows you the contents of one of the other envelopes, which is a rejection letter. The interviewer now gives you the opportunity to switch envelope choices. Should you switch?
You are given 12 balls and a scale. Of the 12 balls, 11 are identical and 1 weighs slightly more. How do you find the heavier ball using the scale only three times?
You are given 12 balls and a scale. Of the 12 balls, 11 are identical and 1 weighs EITHER slightly more or less. How do you find the ball that is different using the scale only three times AND tell if it is heavier or lighter than the others?
Investment Banking Interview
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