1.) Banyak suku dari bentuk aljabar 2a + 3b - 4c + 6 adalah... a. 2
b. 5
c. 4
d. 3

2.) Hasil dari -6ab(4ab² + 2a²b - 3ab) adalah..
a. -24a²b² + 2a²b - 3ab
b. -24a²b³ + 2a²b - 3ab
c. -24a²b³ + 12a³b² - 18a²b²
d. -24a²b³ - 12a³b² + 18a²b²

3.) Banyak himpunan bagian dari A = {bilangan prima kurang dari 15} adalah
a. 4
b. 16
c. 32
d. 64

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?