What will be the output of this Ruby code?

medium📝 Predict Output Q4 of 15

Ruby - Methods

def sum_all(*numbers)
  numbers.sum
end

puts sum_all(1, 2, 3, 4)

A1234

BError: undefined method 'sum'

C10

Dnil

Step-by-Step Solution

Solution:

Step 1: Understand the method behavior
The method collects all arguments into an array called numbers and calls sum on it.
Step 2: Calculate the sum of arguments
Arguments are 1, 2, 3, and 4. Their sum is 10.
Final Answer:
10 -> Option C
Quick Check:
Array.sum adds all elements correctly [OK]

Quick Trick: Use numbers.sum to add all *args elements easily [OK]

Common Mistakes:

Master "Methods" in Ruby

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More Ruby Quizzes