Which of the following are correct?

What is the output of the following code in Ruby? x= 'Ruby' + 'Strings' puts x y= 'Ruby' << 'Strings' puts y z = 'Ruby'.concat('Strings') puts z

In a Ruby installed environment, what happens when 'lrb' is typed in the command prompt?

output of the following Ruby code ? puts 'The product of 5,10,15 is #{5*10*15}';

Statement 1: When a Ruby program terminates, all running threads are killed. regardless of their states. Statement 2: You can wait for a particular thread to finish by calling that thread

What is output of this Ruby code? foo = 'testing' puts defined? foo puts defined? $_

What is the purpose of hash.rehash method in Ruby?

What is the output of the Ruby code (with line numbers) shown below? 1. (0...5).each do |i| 2. puts 'Value of local variable is #{i}' 3. end

Output of Ruby code? puts 'escape the sentence using '\\' puts 'That\'s right, this is a test'

Which of the following options represent correct Ruby syntax?