A group of people are arranging themselves for a parade. If they line up 3 to a row, one person is left over. If they line up 5 to a row, two people are left over. If they line up 6 to a row, one person is left over, and if they line up 8 to a row, 5 people are left over. Required:
a. What was the smallest possible number people?
b. What are all possible numbers people?