Answer:
They seem correct!
Step-by-step explanation:
Yes, it should be taken into account
Answer:
A triangle
Step-by-step explanation: The two squares lean against each other
Use the permutation formula
nPr = (n!)/((n-r)!)
20P15 = (20!)/((20-15)!)
20P15 = (20!)/(5!)
The final answer is choice A