The probability that Christa chooses green and purple is 1/28. Therefore, the answer is option C.
To find the probability that Christa chooses green and purple, we need to divide the number of favorable outcomes by the total number of possible outcomes.
There are a total of 8 colors to choose from, and Christa needs to choose 2 colors. So, the total number of possible outcomes is given by the combination formula: C(8, 2) = 28.
Out of these 28 outcomes, there is only 1 outcome where Christa chooses green and purple. Therefore, the number of favorable outcomes is 1.
So, the probability that Christa chooses green and purple is 1/28.
The probable question may be:
Christa needs to make a painting for art class.
She can only choose two of the eight colors listed
in the table above. What is the probability the two
colors she chooses are green and purple?
Table: Brown, Red, Yellow, Purple, Blue, Green, White, black.
A. 1/4
B. 1/8
C. 1/28
D. 1/56