Answer:
n=R
Step-by-step explanation:
f(n)=9n+1
27
15 :)ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ
x = 1 , y = 7
Oops I meant "there are 3! = 6 ways to permute ABTS that have TS."