[Solved] Find the problem in this Ruby pure function:def random_add(x) x + rand(1..10) end — Ans: Uses random number, so output varies for same input. | Ruby

Ruby - Functional Patterns in Ruby

Find the problem in this Ruby pure function:

def random_add(x)
  x + rand(1..10)
end

AUses random number, so output varies for same input.

BSyntax error in rand usage.

CDoes not return a value.

DModifies input variable.

Step-by-Step Solution

Solution:

Step 1: Understand pure function output rules
Pure functions must return same output for same input.
Step 2: Analyze random usage
rand(1..10) returns different values each call, so output varies.
Final Answer:
Uses random number, so output varies for same input. -> Option A
Quick Check:
Randomness breaks purity = Uses random number, so output varies for same input. [OK]

Quick Trick: Random values cause different outputs, breaking purity [OK]

Common Mistakes:

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