mariah has decided to hire three workers . to determine whom she will hire , she has selected a group of 10 candidates . she plans to have one working interview with 3 of the 10 candidates every day to see how well they work together . how many days will it take her to have working interviews with all the different combinations of job candidates ?
"there are c 310 = 120 different groups of three possible out of 10 candidates and since each of these groups is interviewed every day then total of 120 days are needed . answer : b"
subtract(subtract(subtract(divide(divide(divide(factorial(10), factorial(subtract(10, 3))), factorial(3)), const_2), 10), 10), const_10)