Ruby MCQ Questions with answers and solutions Page 8

Q. What will be the output of the given code?

Code:

for num in 1...5
  puts num
end

(A) 1 2 3 4
(B) 1 2 3 4 5
(C) 0 1 2 3 4
(D) 0 1 2 3 4 5

💬 Discuss

✅ Correct Answer: (A) 1 2 3 4

Explanation: As the range i.e 1...5 is exclusive the loop will loop till 4 and then it will come out of the loop.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:31 pm in Ruby

Q. What will be the output of the given code?

Code:

for i in 1...3  
  for j in 1..3
  puts j
  end
end

(A) 1 2 1 2
(B) 0 1 2 0 1 2
(C) 1 2 3 1 2 3
(D) 1 2 3 1 2

💬 Discuss

✅ Correct Answer: (C) 1 2 3 1 2 3

Explanation: The program will print 1 2 3 two times.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:32 pm in Ruby

Q. What will be the output of the given code?

Code:

for num in 1...4

   puts num*num

end

(A) 0 1 4 9
(B) 1 4 9 16
(C) 0 1 2 3
(D) 1 2 3

💬 Discuss

✅ Correct Answer: (B) 1 4 9 16

Explanation: The program will print 1 4 9 16.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:32 pm in Ruby

Q. What will be the output of the given code?

Code:

i=1
for i in 6..10
puts i**2
end

(A) 36 49 64 81
(B) 49 64 81 100
(C) 49 64 81
(D) 36 49 64 81 100

💬 Discuss

✅ Correct Answer: (D) 36 49 64 81 100

Explanation: The output for the following code is 36 49 64 81 100.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:33 pm in Ruby

Q. What will be the output of the given code?

Code:

for i in 1..5 && j in 5..10
puts i+j
end

(A) 6 8 10 12 14 16
(B) Syntax Error
(C) 6 8 10 12 14
(D) Type Error

💬 Discuss

✅ Correct Answer: (B) Syntax Error

Explanation: syntax error, unexpected keyword_in, expecting keyword_do_cond.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:34 pm in Ruby

Q. What will be the output of the given code?

Code:

counter = 1
while counter < 5
  puts counter
  counter = counter + 1
end

(A) Prints the number from 1 to 4
(B) Prints the number from 1 to 5
(C) Prints the number from 2 to 5
(D) Prints the number from 2 to 4

💬 Discuss

✅ Correct Answer: (A) Prints the number from 1 to 4

Explanation: Counter value is initialized to 1 and it keeps on looping till the counter is less than 5.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:35 pm in Ruby

Q. What will be the output of the given code?

Code:

counter = true
while counter !=false
  puts counter
end

(A) TRUE
(B) FALSE
(C) Syntax Error
(D) Infinite Loop

💬 Discuss

✅ Correct Answer: (D) Infinite Loop

Explanation: Counter value is true in all cases hence true will be printed infinite times.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:35 pm in Ruby

Q. What will be the output of the given code?

Code:

while a&&b
puts a
end

(A) TRUE
(B) FALSE
(C) Syntax Error
(D) Name Error

💬 Discuss

✅ Correct Answer: (D) Name Error

Explanation: undefined local variable or method

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:36 pm in Ruby

Q. What will be the output of the given code?

Code:

a=1
b=1
while a&&b
puts a+b
end

(A) 2
(B) 2 2 2 2 2
(C) Infinite Loop
(D) Syntax Error

💬 Discuss

✅ Correct Answer: (C) Infinite Loop

Explanation: Infinite loop is the correct answer.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:36 pm in Ruby

Q. What will be the output of the given code?

Code:

i = 4
while i > 0 do
  print i
  i -= 1
end

(A) 321
(B) 3210
(C) 4321
(D) 43210

💬 Discuss

✅ Correct Answer: (C) 4321

Explanation: The do statement here indicates that till the while condition is true execute the instructions.

Published by Vinay Kumar ⭐ 8.55K Points at 29-Jun-2023 08:37 pm in Ruby

Ruby MCQs with answers Page - 8

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

Q. What will be the output of the given code?

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