This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.
ScanSolve AI Answer
You're on a roll — Here's the solution for question 12 using the combination method. We assume that "out of every 8 people examined, 5 of them had skin rashes" refers to a fixed group of 8 people, where 5 have rashes and 3 do not. We are selecting 5 people randomly from this group. Let N = 8 be the total number of people. Let K = 5 be the number of people with skin rashes. Let N-K = 3 be the number of people without skin rashes. Let n = 5 be the number of people selected. The total number of ways to select 5 people from 8 is: N