Answer:
1
Step-by-step explanation:
Using the definition
n
= 
where n! = n(n - 1)(n - 2) × 3 × 2 × 1
and 0! = 1
3
=
= 
=
= 1
Answer:

Step-by-step explanation:
Hello, please consider the following.

Hope this helps.
Do not hesitate if you need further explanation.
Thank you
No the answer is B. t=6 or -6
the answer is supposed to be 132 at the most of a
for b it is 165