1.How do you flatten a nested array in Ruby?

2.Which method is used to find the minimum value in an Enumerable?

3.Which method is used to find the index of the first occurrence of a specific element in an Enumerable?

4.How can you sort an Enumerable in descending order?

5.How do you find the unique elements in an Enumerable without modifying the original order?

6.Which method is used to repeat a block of code a specific number of times?

7.How can you concatenate multiple Enumerables in Ruby?

8.What does the `partition` method do in Ruby Enumerables?

9.What will be printed by the following code?

arr = [1, 2, 3, 4, 5]
result = arr.lazy.flat_map { |x| [x, x**2] }.take(6).to_a
puts result.join(',')

10.What does the `sum` method do in Ruby Enumerables?

11.What will be printed by the following code?

arr = [1, 2, 3, 4, 5]
result = arr.reverse_each.each_slice(2).map { |slice| slice }
puts result.flatten.join(',')

12.What does the `grep` method do in Ruby Enumerables?

13.What does the `chunk` method do in Ruby Enumerables?

14.What does the `cycle` method do in Enumerables?

15.What is the purpose of the `each_cons` method in Enumerables?

16.What is the purpose of the `grep_v` method in Enumerables?

17.How do you find the first n elements in an Enumerable that satisfy a given condition?

18.What does the `slice_after` method do in Ruby Enumerables?

19.Which method is used to remove elements from an Enumerable that do not satisfy a given condition?

20.What is the purpose of the `lazy` method in Enumerables?