ACT Math 3.2 Pre-Algebra
ACT Math: Pre-Algebra Drill 3, Problem 2. What is the probability that a red queen will be drawn?
|Foreign Language||Arabic Subtitled|
|Pre-Algebra||Elementary counting technique and simple probability|
|Product Type||ACT Math|
|Statistics and Probability||Compute probabilities of compound events|
Use rules of probability to compute probabilities of compound events
So... even if we haven't lost our shirt at the blackjack tables...
...hopefully we're at least familiar with a card deck...
It has 52 cards, with 13 cards in each of 4 suits -- the red suits are diamonds and
hearts; the black suits are clubs and spades.
So ONE card is drawn and they are asking for a RED QUEEN.
Uh... no -- these queens.
Well, there are only 2 cards that are both red AND a queen --
-- the queen of hearts and the queen of diamonds.
So the odds of pulling EITHER of those cards is a 2 out of 52 chance
or, if we reduce the fraction...
...1 out of 26
The answer is E.
As in, "Easy money."