Quick brain teaser. The numbers 1 through 6 are in play. Player A (the interviewer) chooses 4 of these numbers and arranges them in a given order. Player B (interviewee) has to guess the number that Player A has written down. After each guess, Player A tells B how many digits B has correct and how many of those digits are in the correct location. For example, if the number A wrote down is '2345' and B writes down '5346', A responds 'you have 3 of the digits correct and 2 of the locations correct'. This goes on until B writes down the correct number.
