Problem 170 of 7
Identify overcounting or undercounting in calculating the number of paths from (0,0) to (2,2) by moving only right or up as 4!.
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
detect duplicated arrangements or missed restrictions.
Hidden until you reveal it.
Identify whether duplicated arrangements or missing valid outcomes cause the error.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify what the method counts.
2. Compare it to what the problem asks for.
3. Name overcounting or undercounting and the cause.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Only saying wrong formula without explaining order, repeats, or restriction.