SOLUTION: I just need someone to tell me if I did these correctly before I submit my homework. 7. Of the 100 people who were given a new sleeping aid, 30 experienced a light headache, 18

Question 461728: I just need someone to tell me if I did these correctly before I submit my homework.
7. Of the 100 people who were given a new sleeping aid, 30 experienced a light headache, 18 experienced a reduced appetite, and 60 experienced neither side-effect. How many people experienced both a light headache and a reduced appetite?
60-48= 12?
8. A quiz consists of 6 multiple-choice questions, each has three possible answers. In how many different ways can the quiz be answered if one answer is chosen for each question?
3^6?
9. A code consists of two letters chosen from the English alphabet, followed by 4 digits. If the first letter must be a K or an M, the second letter can be any one of the 26 letters, how many different codes are possible?
I dont know how to even set this one up...
10. In how many ways can two math books and three English books be arranged in a row if the two math books must be placed next to each other?
2^3?
Answer by rwm(914) (Show Source): You can put this solution on YOUR website!
9)
k or m means there are two choices
2*26*10^4

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