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 16 colors of sweatshirts, 7 of which are all cotton and 9 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.  1/35

b.  44/7

c.  1/52

d.  9/455

May 4th, 2015

7/16

6/15

5/14

4/13

Therefore the chance that all four get cotton sweatshirts = 7/16 x6/15 x5/14 x4/13= 0.019

May 4th, 2015

so is the answer a b c or d ?

May 4th, 2015

the answer is c

1/52

May 4th, 2015

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May 4th, 2015
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