Answer:
x=− 245/312
Step-by-step explanation:
Explanation:
a)
b) First, we have that
On the other hand,
Therefore, both expressions are equal. This makes sense, because selecting k elements from a group of n is the same than specify which elements you will not select. In order to specify those elements you need to select the n-k elements that will not be selected. Hence, each time you are selecting k from n, you are also selecting n-k from n, and from that reason both combinatorial numbers are equal.
Answer:
I not fully for sure but I think the answer to your question is u
Ouuuuuuu i didnt have that but can somebody help with this because it seem hard.