Answer: 720 ways
Step-by-step explanation:
Given
A train has 1 main engine and remaining 6 train cars
If the engine is always in the front the remaining train cars can be arranged is

Answer:
12
Step-by-step explanation:

Answer:
2 12/16, 2 18/25, and lastly 2.
Step-by-step explanation:
Since 2 is least, we can put that at the end. That leaves us with 2 18/25 and 2 12/16. Since 12/16 is greater, we will put that as the greatest. 2 18/25 is in the middle. Hope this helps!
Debras fish tank 16 liters which mean she have 80 liter