Answer:
n(9n)(8n+8) = 72x^3+72x^2
I hope you know what '!' means
2!=2
3!=6
4!=24
basicalkly times every natural number including and before that number
nCr=

so

=

=

=

=

=

=

=

=

=

=
Answer:
<h2>Zero.</h2>
Step-by-step explanation:
Well, assuming that the cards are numbered 1, 2, 3, 4 and 5, then the probability of getting 6 is zero, because there's no card with such number.
Remember that a simple probability is a ratio between the possible events and the total number of outcomes. In this case, the total number of outcomes is 5 and the events are zero, because there's no card with 6.
Sice you are multiply by zero the answer is 0 because any number time 0 is 0. 3+4 =7 then times 0