What will be the output of this Ruby code?

medium📝 Predict Output Q4 of 15

Ruby - Loops and Iteration

arr = [1, 2, 3]
arr.each { |n| puts n * 2 }

A2 4 6

B1 2 3

CError: undefined method

Dnil

Step-by-Step Solution

Solution:

Step 1: Understand the iterator block
The each method passes each element to the block variable n.
Step 2: Calculate output for each element
Each element is multiplied by 2 and printed: 1*2=2, 2*2=4, 3*2=6.
Final Answer:
2 4 6 -> Option A
Quick Check:
Output of arr.each with n*2 = A [OK]

Quick Trick: each passes elements to block; output is block result printed [OK]

Common Mistakes:

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