math

20 Questions

1. In a Venn diagram comparing sets of students, what area represents students who are both in the math club AND the science club?
2. Given set A = {2, 4, 6, 8, 10} and set B = {1, 3, 5, 7, 9}, what is A ∪ B (A union B)?
3. Henry rolls 2 number cubes numbered 1 through 6. What is the probability that he rolls a sum of 7?
4. Let set X = {a, b, c, d, e} and set Y = {c, d}. Which notation shows the relationship between set X and set Y?
5. If set P = {prime numbers less than 20} and set Q = {odd numbers less than 20}, what is P ∩ Q (P intersection Q)?
6. In a class of 25 students, 10 like math, 8 like science, and 3 like both. What is the probability that a student chosen at random likes math?
7. A survey of 100 people showed that 60 like coffee, 40 like tea, and 20 like both. If a person is chosen at random, what is the probability they like only coffee?
8. A bag contains 5 red marbles and 3 blue marbles. What is the probability of drawing a red marble?
9. In a certain town, 60% of people own a car and 30% own a bicycle. If 20% own both, what percentage of people own neither a car nor a bicycle?
10. A fair coin is tossed three times. What is the probability of getting exactly two heads?
11. + 10 more questions