I assume you want to know a permutation about how many ways they can be in the final set-up.
Order matters, which is why this is a permutation.
Formula: P(n, r) =

where the permutation is

, with P for permutation.
Plug in:
4!/(4-2)!
4!/2!
(1 x 2 x 3 x 4)/1 x 2
(3x4)/1
= 12
12 ways.
Tank A has a greater volume.
Hello, and thank you for posting your question here on brainly.
I'm not 100% sure which side of the first you're talking about, so I'll give you both.
3589 / 18 = 199.3
The first (r to l) is 9.
The first (l to r) is 1.
Hope this helps! ☺♥
what direction are they to be reflected
Step-by-step explanation:
answers will be different depending on that