JustAPotato

I'm not sure that's correct, as you could also have for example 10, 2, and 3 in a column or 7, 2, and 12.

Got it, thanks!

3. stick and dot method seperately for each candy. 11C3 * 10C3 = 19800
4. stick and dot method for each case of the twins having a certain number.
0 each = 8C2
1 each = 6C2

2 each = 4C2

3 each = 2C2
Add them and you get 50.

reply if you want a more detailed explanation

...Monday 23rd

Thank youuuuuuuuuuuuu

It says (2,3) is wrong, although what you did makes sense to me