Michelle puts 7 red marbles and 5 blue marbles into a bag. If two marbles are chosen at random from the bag, one by one, without replacement, find the probability that two blue marbles are chosen. \( \begin{array}{ll}\text { A } \frac{25}{144} & \text { C } \frac{7}{22} \\ \text { B } \frac{49}{144} & \text { D } \frac{5}{33}\end{array} \)

6) An auto parts store purchases rebuilt alternators from two suppliers. From Supplier A, 150 alternators are purchased and \( 2 \% \) are defective. From Supplier B, 250 alternators are purchased and \( 3 \% \) are defective. Given that an alternator is defective, find the probability that it came from Supplier B.

Two dice are rolled. Enter the size of the set that corresponds to the event that the sum of the dice is 3 .

Lisa forgot the password of an online service, but remembers that the password was just made of lowercase vowels \( (a, e, i, 0, u) \), was 4 characters long and contained at least one ' \( i \) '. How many possible passwords fulfill these requisites? Ex: 5

In concurso consiste en lanzar dos dados normales al aire..El participante lana solo si el producto de los números en las caras resulta un número urimo. ¿Cuál es la probabilidad de perder en el concurso?

«выпала красная грань»? 3) Случайный опыт может закончиться одним из 4 -х элементарных соб̈ытий: A, B, C или D. पему равна вероятнось элементарного соб̈ьтия A, если P(B)=1/3, P(C)=2/5, P(D)=1/12? 4) Три мальчика покупают тетради двух иветов(каждый одного ивета):