What is the probability that the friends order only cotton sweatshirts?

Mathematics
Tutor: None Selected Time limit: 1 Day


Each of four friends orders a sweatshirt from a catalog. There are 18 colors of sweatshirts, 6 of which are all cotton and 12 of which are a blend. Each one orders a different color (no repeats) at random. What is the probability that the friends order only cotton sweatshirts?

a.  77/255

b.  1/204

c.  91/15

d.  1/15

May 4th, 2015

first one's chance of getting cotton is 6/18=1/3

2nd one 5/17(less one cotton)

3rd got 4/16=1/4

4th  3/15=1/5

1/3x5/17x1/4x1/5=1/204

=1/204

May 4th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
May 4th, 2015
...
May 4th, 2015
Mar 27th, 2017
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer