How to create Random number generator?

Question

I'm learning foreign language. And I have difficulty in reading longer numbers as quickly as I want!

I need random number generator program.
The program should have these options:
- Set how many digits in random number
- Set visible time (difficulty level).

Answer 1

Sorry!
I really need.
I removed "challenges"

Answer 2

thank you it's underestimate
i really will use this
thank you