Can you solve problems 3,5, and 8 (a-d) please?????? This is about probability!!!! :)

3. How many ways can five different textbooks be arranged on a shelf? 120 4. How many groups of 3 toys can a child choose to take on a vacation from a toy box containing 11 toys? 11 63 = 145 How many different sets of 6 questions for a test can be chosen from a file containing 22 questions? 22 = 74613 6. How many ways can Laura color a map with 4 adjacent regions if she has 15 colored pencils? 15 4 = 1365 7. How many ways can a teacher select 5 students from a class of 23 students to create a bulletin board display? 23 (s = 33 649 8. There are seven children to be lined up in a straight line for a photograph. a) How many different ways are possible? 5640 b) How many different ways are possible if Sally must be in the middle? , P c) How many different ways are possible if Fred is on the far left? d) How many different ways are possible if Hannah and Brian must be next to each other