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

Finds the first element that satisfies a condition

Finds the index of the last element

Finds the index of the first element

Finds the index of all elements

2.In Ruby, how do you iterate over a hash and modify each value in place?

for

each

transform_values!

modify_each

3.In Ruby, what does the 'times' method return when used with a block?

Number of iterations

Array of results

Boolean value

Nil

4.What is the purpose of the 'step' method in a Ruby loop when used with a block?

Executes the block with a step value

Executes the block for each element

Executes the block in reverse order

Executes the block with a specific range

5.What is the output of the following code?

(1..3).each do |i|
  break if i == 2
  puts i
end

0

2

3

1

6.In Ruby, what is the purpose of the 'until' keyword?

Acts like 'if' but with a negative condition

Acts like 'if' with a positive condition

Acts like 'else' with a negative condition

Acts like 'else' with a positive condition

7.What is the purpose of the 'loop' keyword in Ruby?

Creates an infinite loop

Exits the loop prematurely

Skips the current iteration

Jumps to the specified label

8.How can you iterate over a hash and access both key and value using the 'each_pair' method?

for

each

each_pair

iterate

9.In Ruby, what is the purpose of the 'retry' statement?

Restarts the entire program

Restarts the current iteration of the loop

Exits the loop

Jumps to the specified label

10.In Ruby, how can you iterate over a range of numbers and execute a block of code for each element using the 'each' method?

for

iterate

each

range_each

11.What is the output of the following code?

(1..4).step(2) do |i|
  puts i * 2
end

2,6

1,4

2,4

2,8

12.What is the purpose of the 'downto' method in Ruby when used with a range?

Iterates over elements with a specified step value

Iterates over elements in reverse order

Iterates over even-indexed elements

Iterates over odd-indexed elements

13.What does the 'each_with_object' method do in Ruby when applied to an array?

Iterates over each element with its index

Iterates over elements in reverse order

Iterates over each element with an additional object

Iterates over odd-indexed elements

14.What is the output of the following code?

i = 0
while i < 3
  puts i
  i += 1
end

0

1.2.3

2

0,1,2

15.How can you iterate over the characters of a string and modify them in place using the 'each_char' method?

for

each_char

modify_each

iterate

16.What is the purpose of the 'next' keyword in a Ruby loop?

Skips the current iteration

Exits the loop prematurely

Restarts the loop

Jumps to the specified label

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

Modifies each element of the array

Iterates over each element of the array

Combines elements of the array into a single result

Removes elements from the array

18.In Ruby, how can you iterate over a range of numbers and stop the iteration if a certain condition is met using the 'find' method?

for

each

find

iterate

19.What does the 'any?' method do in Ruby when applied to a hash?

Checks if at least one key-value pair satisfies a condition

Checks if all key-value pairs satisfy a condition

Checks if none of the key-value pairs satisfy a condition

Checks if all keys are true

20.In Ruby, how can you iterate over a range of numbers and stop the iteration if a certain condition is met?

for

each

detect

iterate

Loops VI