KA-0157●●●5 points, difficulty 3 of 35 ptLevel 7–8not yet calibratedA drawer holds 12 red socks, 10 blue socks and 8 green socks, all mixed up. You take socks out one at a time in the dark. What is the smallest number of socks you must take to be certain of having three of the same colour?CNT-17The pigeonhole principlealso CNT-18, LOG-09