Wish I knew pullet or Roo ?????

[Homestead girl]

I have 13 EE that are 10 weeks old. Wish i could tell what they are pullet or roo.
Here are a few pictures of them.











Here are some of the EE could not get pics of all of them. Any ideas of pullet or roo would be greatly appreciated.
Thanks so much.

 

[my sunwolf]

The 3rd from the top and the 2nd from the bottom look like roosters to me, the others look like pullets from these photos. I'm judging by feather patterning and comb size.

 

[Alex15]

x2

 

[goldfinches]

The things to look for are red feathers on their shoulders and pointed tailfeathers. And wide, red combs.

Here are my guesses:

1. Can't see it good enough
2. Pullet
3. Cockerel
4.&5. Can't tell
6. Pullet
7. Cockerel
8. Pullet
9. Cockerel
10. Pullet

But, I can't enlarge pics - it crashes my computer, so I'm judging by the small ones.