Generate a random number with 7 digits

Question

How can I produce a random number in a range from 1 million to 10 million?

rand(10) works, I tried rand(1..10) and that didn't work.

Answer 1

I find this more readable:

7.times.map { rand(1..9) }.join.to_i

Answer 2

It's an instance method:

puts Random.new.rand(1_000_000..10_000_000-1) 

Answer 3

Take your base number, 1,000,000 and add a random number from 0 up to your max - starting number:

 1_000_000 + Random.rand(10_000_000 - 1_000_000) #=> 3084592