If I have 6 dices, and they all have numbers from 1-6 (when you're playing 10000 in math.
These are all on your first try
1.what is the proability of rolling 123456
2.what is the proability of rolling 224455
3.what is the proability of rolling three ones and others can be other than 1
4.what is the proability of rolling 4 6s
5.what is the proability of rolling 1 one and others can't be one on 1st try
What is the proability of rolling 1 one, but you only roll 5 dice and this is second try.
What is the proability of rolling1 one, but only rolling 4 dice and this is third try.

What is the proability of rolling 1 one rolling 6 dice on 1st roll of hand
What is the proability of rolling 1 one rolling 5 dice on 2sd roll of hand
What is the proability of rolling 1 one rolling 4 dice on 3rd roll of hand
What is the proability of rolling 1 one rolling 3 dice on 4th roll of hand
What is the proability of rolling 1 one rolling 2 dice on 3RD roll of hand

You fail to specify if order is significant or not, without that information there are 2 answers to each question

It is not possible to roll a die and getting 123,456. Dice only go up to 6!! In other words, 0% In your case, you use six die. You still can't get to 123,456 in one roll, obviously. Also, ask for help, don't demand it.