Chain length

I want to run these combos:

12/50
13/50
13/47

Would a 110 work for these or would I need a 112.

That's all
Cheers

112 will work.
I have 114 links on my bike with 13-50, the wheels back about 1/2 way, with a 112 link it would be close to the front of the adjustment.
You can get the zeta axle blocks too, they allow you to pull the wheel back further than the stock ones do giving you more adjustment, I have them for that reason they're not just bling.
I need the wheel back atleast 1/2 way when my chains new so I have room for studded tires, they like to eat the plastic shock guards, I found that out the hard way on my last bike.