Nine cards numbered 1-9 are flipped upside down. What is the probability of flipping up an even number?
2 answers:
You might be interested in
Answer:
No.
Step-by-step explanation:
Let's start by simplifying the first expression:
Remove the parentheses:
Combine like terms:
(Assuming that none of the variables are equivalent to 0)
By the binomial theorem,
I assume you meant to say "independent", not "indecent", meaning we're looking for the constant term in the expansion. This happens for k such that
12 - 3k = 0 ===> 3k = 12 ===> k = 4
which corresponds to the constant coefficient