The first question: "A group of six people has four more people in a group", assuming that another group is added, then that group is short of two people. "A group of eight people, 1 person two groups" can be understood as a group with two less people, and both distributions are short of two people. As long as the least common multiple of 6 and 8 is 24, it is not in the range of people, so 24. Question 2: As long as you find a number between 20 and 50 divisible by 3 and divide it by 3, there will be more than one answer: 7, 8, 9, 10,1,12, 13,1.