MATH 1070Q Lecture Notes - Lecture 4: Broccoli
Document Summary
Q: a random card is drawn from a standard deck of cards. Find the probability that the card is a club and also a jack or ace. Today"s learning objectives - 9/11/17: count the ways a number of events can occur, understand the importance of order and distinct elements, know how to compute permutations and combinations and the difference between them. In general, there are n possible ways to complete a task. Doing it twice gives n2 possibilities, three times gives n3, etc. With replacement (put the card back in the deck) Without replacement (don"t put the card back in the deck) Multiplication principle: if we have a sequence of 2 choices to make with a options for the first choice and the second choice always has b options, then there are a*b possible outcomes. Doesn"t work if the second choice isn"t always b (isn"t constant for all choices of a; depends on which one you picked)
