You pick a card at random. Without putting the first card back, you pick a second card at random. What is the probability of picking a 7 and then picking a number greater than 8 ? Simplify your answer and write it as a fraction or whole number.

II asks voters to rank Social Security, economics, the war on terror, health care, and educatic (a) How many rankings are possible? rankings (b) What is the probability that one reply chosen at random has the issues ranked in the probability as a fraction.)

21 Deux événements \( A \) et \( B \) vérifient \( P(A)=0,45 \), \( P(B)=0,6 \) et \( P(A \cup B)=0,9 \). 1. Calculer \( P(A \cap B) \). 2. En déduire \( P_{B}(A) \) et \( P_{A}(B) \).

A \( € 50 \), a \( € 20 \), a \( € 10 \) and a \( € 5 \) note are placed in equal-sized envelopes in a bag. A person draws an envelope at random and wins that amount. (a) What is the expected value for this game? (b) Six more equal-sized envelopes, each with a \( € 5 \) note, are placed in the bag. A person draws an envelope at random and wins that amount. What is the expected value for this game?

ag contains 9 red balls and 7 white balls. Two balls are drawn without replacement. (Enter y (a) What is the probability that the second ball is white, given that the first ball is red? (b) What is the probability that the second ball is red, given that the first ball is white? (c) Answer part (a) if the first ball is replaced before the second is drawn.

(a) A box contains 6 red balls, 4 white balls, and 10 black balls. Two balls are drawn a the second is drawn). What is the probability of getting a red ball on the first draw an fraction.) (b) Answer part (a) if the first ball is not replaced before the second is drawn. (Enter (c) Are the events in part (a) or in part (b) independent? Explain. Since the ball was replaced the events in part (a) are ---Select--- \( \checkmark \). Not rep events in part (b) were ---Select--- \( \checkmark \).