What will be the output of this Ruby code?

medium📝 Predict Output Q4 of 15

Ruby - Loops and Iteration

num = 2
until num > 5 do
  puts num
  num += 2
end

A2 4 6

B2 4 6 8

C2 4

DNo output

Step-by-Step Solution

Solution:

Step 1: Understand the loop condition
The loop runs until num > 5 becomes true.
Step 2: Trace the loop
Initial num = 2 (<=5), prints 2, increments to 4.
num = 4 (<=5), prints 4, increments to 6.
num = 6 (>5), loop stops.
Final Answer:
2 4 -> Option C
Quick Check:
Loop stops once condition is true, so 6 is not printed [OK]

Quick Trick: Loop stops before condition is true, last value not printed [OK]

Common Mistakes:

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