If A has two armies and B has one army find the probability for each event: A loses an army, B loses an army and neither lose an army If A has three armies and B has one army find the find the probability for each event: A loses an army, B loses an army and neither lose an army If A has three armies and B has one army find the probability for each event: A loses an army, B loses an army and neither lose an army If A has two armies and B has two armies find the probability for each event: A loses an army, B loses an army and neither lose an army

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.8: Probabilities Of Disjoint And Overlapping Events
Problem 2C
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Consider a modified version of the board game RISK in which player A is attacking player B.  At the beginning of each turn, player A rolls N 4-sided dice where N+1 is the number of armies that player A has (So if A has 3 armies, A starts by rolling 2 4-sided dice).  Player B always rolls a single 6-sided die.  If the biggest roll among the dice that A rolls is bigger than player B's roll, then player B loses an army.  If all of player A's rolls are less than player B's roll, then player A loses an army.  If it is a tie, neither player loses an army.  The rolls are repeated until either B has no armies (A has captured the territory) or A has only one army (the attack has been repelled).

  1. If A has two armies and B has one army find the probability for each event: A loses an army, B loses an army and neither lose an army
  2. If A has three armies and B has one army find the find the probability for each event: A loses an army, B loses an army and neither lose an army
  3. If A has three armies and B has one army find the probability for each event: A loses an army, B loses an army and neither lose an army
  4. If A has two armies and B has two armies find the probability for each event: A loses an army, B loses an army and neither lose an army
  5. If A has three armies and B has two armies find the probability for each event: A loses an army, B loses an army and neither lose an army
  6. Finally: If A has three armies and B has two armies find the probability of the events: A captures the territory and B repels the attack.
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