hugomimihu

It's obvious you do since if you are using plain text it wouldn't be empty behind green and red.

please arrange your latex properly as we cannot see the prob. for green and red.

Your suggestions are wrong.

It is important to read the question fully.

As I said, i have given hints to people asking this question.

No offense, I'm just pretty tired and unwilling to dig up my PDF files, so navigate to the search bar and find this question.

Or.

The probability of reaching at least 2 correct numbers is \(\binom{7}{3}\)

Perhaps this is what you are looking for?

I apologize for the late reply as I was rather busy.

I have seen this AoPS question.

10 or so times. Search it with search bar.

You did not properly enable latex.

x is larger than y.

thus xy pairs are

6,4

7,3

8,2

9,1

10,0

So

36 - 16 = 20

49 - 9 = 40.

x = 7, y=3

You can take it from here.

If you don't understand anything feel free to ask.

Also fix your latex in the future.

There's a latex buttonnext to "image"

Here is a graph.

The slope is 5-1 = 4 divided by5 + |-3| = 8, so the slope is 1/2.

Thus the y value increases 1 for every +2 in the x.

You can calculate c now.

If you don't understand anything feel free to ask.

Written clearly in the answer.

Guest said, see if f(x) = x works.

It means, see if f(x) = x is a valid solution.

One yard is equivalent to 91.44 centimeters.

You can calculate how many "full" 10s go into 91.44

If you don't understand anything feel free to ask.