1.What does the 'reduce' method do in Ruby when applied to an array?

2.What is the output of the following code?

i = 0
loop do
  puts i
  i += 1
  break if i == 3
end

3.What is the purpose of the 'retry' statement in Ruby?

4.What is the output of the following code?

(1..5).step(2) do |i|
  puts i
end

5.In Ruby, how can you skip to the next iteration in a loop?

6.What does the 'until' loop in Ruby do?

7.How is the 'for' loop in Ruby different from the 'each' method when iterating over an array?

8.What does the 'next if' statement do in a Ruby loop?

9.In Ruby, how can you loop through the characters of a string using the 'each_char' method?

10.How do you break out of multiple nested loops in Ruby?

11.What is the purpose of the 'step' method in a Ruby loop?

12.What does the 'times' method return in Ruby when not used with a block?

13.In Ruby, what is the purpose of the 'redo' statement in a loop?

14.In Ruby, what does the 'each_index' method do when applied to an array?

15.How can you iterate over the elements of a hash in reverse order in Ruby?

16.What does the 'inject' method do in Ruby when applied to an array?

17.In Ruby, how can you iterate over a range of numbers and skip every second number?

18.In Ruby, how do you iterate over an array and modify each element in place using the 'map!' method?

19.What is the output of the following code?

(0..2).each do |i|
  puts i * 2
end

20.In Ruby, how can you iterate over a hash and access both key and value using the 'each' method?