Answer:
I think its A but im not sure
Step-by-step explanation:
There are 3 different numbers
slot method
how many 3 digit numbers?
321
312
123
132
213
231
6 numbes
how many 2 digit numbers?
12
21
13
31
23
32
6 numbers
how many 1 digit numbers
1
2
3
3 of them
6+6+3=15
15 different number, yah you ar right
270 solve that yourself lol
Answer: Hi! I would say it is D because the other answers really don’t make sense. And the passages said that they were rated low for air quality.
Step-by-step explanation:
I hope this helps!