[Solved] Find the mistake in this Ruby code:arr = [10, 20, 30] puts arr.first(2) — Ans: No mistake, code runs fine | Ruby

Ruby - Arrays

Find the mistake in this Ruby code:

arr = [10, 20, 30]
puts arr.first(2)

Aarr.first(2) returns an array, puts expects string

Barr.first(2) is invalid syntax

Carr.first(2) returns nil

DNo mistake, code runs fine

Step-by-Step Solution

Solution:

Step 1: Understand arr.first(2) return type
arr.first(2) returns an array of first two elements: [10, 20].
Step 2: Check puts behavior with arrays
puts prints each element of the array on a new line without error.
Final Answer:
No mistake, code runs fine -> Option D
Quick Check:
puts can print arrays element-wise [OK]

Quick Trick: puts prints arrays element-wise without error [OK]

Common Mistakes:

MISTAKES

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