help me plz
A line of greeting cards features messages taht say happy birthday, congrats, and feel better soon. The cards come with pictures of dogs, cats, birds, horses, or rabbits, and either have white, pink, blue or green envelopes. If a salesperson takes a card and envelope at random from a sample case containing one of each type, what is the probability it is a happy birthday card with a picture of a dog?
2006-10-17 14:35:52 · 6 answers · asked by dollyinc31 1 in Science & Mathematics ➔ Mathematics
There are 3 choices for the saying and 5 choices for the animal.
Chance of happy birthday (1/3)
Chance of a dog (1/5)
Chance of both (1/3 x 1/5) = 1/15
The color of the envelope doesn't matter, so that isn't factored in.
Chance that the chosen card is a happy birthday card with a picture of a dog is 1/15 or 6.667%
2006-10-17 14:39:33 · answer #1 · answered by Puzzling 7 · 0⤊ 0⤋
The probability of selecting a HAPPY BIRTHDAY CARD is 1/3
the probability of selecting a card with dog picture is 1/5
required P = 1/3 * 1/5 = 1/15
2006-10-17 22:19:45 · answer #2 · answered by Amit K 2 · 0⤊ 0⤋
the probability of happy birthday is 1/3, and
the probability of dogs picture is 1/5
therefore, the probability of happy birthday card with dog picture is (1/3) x (1/5) = 1/15
Since envelopes is not a factor
2006-10-17 14:48:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋
there are five possible choices for animals: dogs, cats, birds, horses, rabbits
there are three possible choices for messages: happy birthday, congrats, and feel better soon
so the answer is 1/3 x 1/5 = 1/15
2006-10-17 14:39:02 · answer #4 · answered by buaya123 3 · 0⤊ 1⤋
1 in 15
Multiply 1 in 3 chance of the right greeting with 1 in 5 chance of the right animal
2006-10-17 14:39:19 · answer #5 · answered by Hitchmoughs_Guide _2 _The_Galaxy 2 · 0⤊ 0⤋
1/5 * 1/3 = 1/15
The envelope color does not matter in this particular question
2006-10-17 14:41:19 · answer #6 · answered by Mahmoud MC 3 · 0⤊ 0⤋