Find each probability using permutations or combinations (whichever is appropriate). 42. A class contains 12 girls and 16 boys. If a group of 5 people is formed from this class, what is the probability that they are all boys? 43. To enter a video call with their teacher, each student must enter a unique passcode that begins with 3 capital letters that do not repeat. What is the probability that a student's passcode begins with ABC? 44. There are 30 calculators numbered 1-30 in a case. If 4 of the calculators are broken, what is the probability that the numbers on the broken calculators are at least 16? 45. Laura is filling three empty photo frames on her mantle by randomly using individual pictures of her eight grandchildren. If Ben i her grandson, what is the probability that his picture is used in the middle frame