How can generate a random number between 40 and 47 using ruby?

Question

How can generate a random number between 40 and 47 using ruby? I tried that but could not understand. How do I generate a random number in a certain range with Ruby?

This question is really vague. What exactly did you not understand, and equally important, what did you understand or do you think the given solutions do? — Holger Just, Apr 23 '12 at 09:54

score 4 · Accepted Answer · answered Apr 23 '12 at 09:53

4

rand(8) will generate a random number between 0 and 7 (note that there are indeed 8 numbers in that range).

All you want to do is add 40 to that range, so you'll get numbers between 40 and 47. Like this:

40 + rand(8)

answered Apr 23 '12 at 09:53

Pieter Jongsma

score 2 · Answer 2 · answered Apr 23 '12 at 09:50

2

You can try this one rand(40..47)

answered Apr 23 '12 at 09:50

Said Kaldybaev

1

Note that this will only work with Ruby 1.9 and up. – Pieter Jongsma Apr 23 '12 at 09:55
i tried it in ruby 1.9.2 – Said Kaldybaev Apr 23 '12 at 09:56
Apologies. I edited my comment. – Pieter Jongsma Apr 23 '12 at 09:59

2 Answers2