2 brown, 8 yellow, 8 green, thus our sample space is 2+8+8 = 18.
What is the probability that the card is NOT yellow? How many non-yellow are there? well 2 + 8 = 10, favorable outcomes.

Hi!! What options are you given because I would say feet if you didn't have the option of yards or anything like that :)
The answer is a=0. I hope I helped
Given:
The sequence is:

To find:
The formula for the nth term in the given sequence.
Solution:
We have,

The given sequence can be written as

The sign are alternative and the absolute value of each term can be defined by the expression
, where n is a natural number.
So, the required formula is:

Therefore, the formula for nth term in the given sequence is
.
We manipulate the given equation in order to solve for EC. We do this by cross multiplying.
The resulting equation will be:
EC = (4 x 3)/5
EC = 12/5 = 2.4
Additionally, the side-splitter theorem works for this problem since DE and AC are parallel to each other, therefore splitting the remaining two sides into proportional segments.