What will be the output of this Ruby code?

medium📝 Predict Output Q5 of 15

Ruby - Basics and Runtime

arr = [1, 2, 3]
arr.each do |num|
  puts num * 2
end

A1 2 3

B2 4 6

C[2, 4, 6]

DError: undefined method 'each'

Step-by-Step Solution

Solution:

Step 1: Understand each method on array
each runs the block for each element, here multiplying by 2 and printing.
Step 2: Output for each element
1*2=2, 2*2=4, 3*2=6 printed on separate lines.
Final Answer:
2 4 6 -> Option B
Quick Check:
each with puts prints each doubled number [OK]

Quick Trick: each prints elements one by one, not as array [OK]

Common Mistakes:

MISTAKES

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