Question

Find the numbers of paths through the below grid.

Answer 1

I don't get which kind of paths the question is referring to. Any ideas?

Answer 2

@whpalmer4 @terenzreignz @dan815

Answer 3

Me neither :)
Your guess is as good as mine ^_^

Answer 4

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Answer 5

I also don't see what the slightly more bold lines in the grid refer to. And that hole like thing at the top left corner? Donno wat that's doing either lol.

Answer 6

We need professional assistance :D

Answer 7

ye lol. tried googling. no luck. just mailed my elearning teacher again. waiting for a reply, let's see what he says. it's 6:57 am too lol. don't think he will reply any time soon =/.

Answer 8

@whpalmer4 weeeear arrrre uuu

Answer 9

@terenzreignz I just found this on google:

http://granderie.ca/pj/files/pj/my%20test%20solutions.pdf

Scroll down to question 23. Does this help you understand what the grid question is asking as I still don't understand and the teacher hasn't replied lol.

Answer 10

i think the question requires the use of algorithms for combinations and permutations

Answer 11

Well obviously but I don't get what the question is asking exactly. I know it's asking for paths but what kind of paths is what I don't understand.

Answer 12

i suppose we need to find the number of shortest paths along the edges of the cell that start at (0,0) and end at (n,m) or something like that !

Answer 13

still looks rather tedious.

Answer 14

@terenzreignz I got it! You have to use pascal's triangle to get all the paths. Now it's easy lol :D

Answer 15

ya pascal triangle or just straight up combinatorics

Answer 16

oh and it also has to say that u can only go right or down, otherwise you cant use pascals triangle

Answer 17

@dan815 That is correct. That wasn't clear but from what we have learnt, it would be fairly obvious to see that it's probably what they meant.

Answer 18

@dan815 What would you do for straight up combinatorics in this case?

Answer 19

@dan815 ? What would be your approach if we were to use combinatorics. Btw, I already got the answer using the triangle and submitted the answers. Just wondering what you would do if you used straight forward combinatorics.

Answer 20

i mean pascals triangle way, but instead of writing all the numbers down, just put the choose formula at the points you want to take