[Solved] Why does this Ruby code cause an error? 3.times { |i| puts i + j } — Ans: Variable j is not defined | Ruby

Ruby - Loops and Iteration

Why does this Ruby code cause an error?

3.times { |i| puts i + j }

Atimes block cannot use addition

BVariable j is not defined

CBlock variable i must be named j

Dputs cannot print expressions

Step-by-Step Solution

Solution:

Step 1: Check variables used inside block
The block uses j which is not defined anywhere.
Step 2: Understand scope rules
Undefined variables cause a runtime error in Ruby.
Final Answer:
Variable j is not defined -> Option B
Quick Check:
Undefined variable causes error [OK]

Quick Trick: All variables must be defined before use in block [OK]

Common Mistakes:

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