[Solved] What will be the output of this Ruby code?class Number def initialize(n) @n = n end def +(other) @n - other end end num = Number.new(10) puts num + 3 | Ruby

Ruby - Operators and Expressions

What will be the output of this Ruby code?

class Number
  def initialize(n)
    @n = n
  end
  def +(other)
    @n - other
  end
end
num = Number.new(10)
puts num + 3

A7

BError: wrong number of arguments

CError: undefined method `-` for Integer

D13

Step-by-Step Solution

Solution:

Step 1: Analyze the + method
The + method subtracts other from @n (10 - 3).
Step 2: Calculate the result
10 - 3 equals 7, so num + 3 returns 7.
Final Answer:
7 -> Option A
Quick Check:
Operator method returns 7 = D [OK]

Quick Trick: Operator methods can do anything, not just expected math [OK]

Common Mistakes:

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