I cant see the third one but the 1st, 2nd and 4th picture all have balls. Sorry man. Here is some tips from the advanced marijuana horticulture bible to raise the chance of females, most of this is quoted but I suggest you snag or download the book its truly amazing and has all the details you will ever need.
*After the plant has three pairs of "true leaves" (meaning do not count very first round ones) the environment plays a big role in possible gender outcome.
- Increased levels of nitrogen produces more females
- Lower mild temperatures and high humidity make for more females. ( only for early seedling and veg stage, lower humidity during flowering stage, some where around 40% should be max to be safe)
- High blue light spectrum increases the chances for females ( MH/ or high kelvin cfl)
- Fewer hours of daylight makes for more females. (ie. 18/16 hours of light instead of 24)
- Be sure to allow ample room for tap root to stretch in initial stages of growth. Its good to start them in 16-32oz cups at a minimum.
- Growers following these guidelines report much higher female/male ratio's.
Again let me stress this is just quotes from Jorge Cervantes Marijuana bible, a book many advanced growers swear by. I hope it helps in any future grows, sorry bout the dudes in the garden, it sucks!