Ruby - Loops and Iteration
Which Ruby
for loop correctly prints all even numbers between 2 and 12 inclusive?Which Ruby for loop correctly prints all even numbers between 2 and 12 inclusive?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the requirement
Print even numbers from 2 to 12 inclusive.Step 2: Analyze options
for i in 2..12 do puts i if i.even? end usesi.even?to filter even numbers correctly.
for i in 1..12 do puts i if i % 2 == 1 end prints odd numbers.
for i in 2..12 do puts i if i % 2 != 0 end prints odd numbers due toi % 2 != 0.
for i in 2..12 do puts i + 1 if i.even? end adds 1 to even numbers, printing odd numbers instead.Final Answer:
for i in 2..12 do puts i if i.even? end correctly prints even numbers from 2 to 12.Quick Check:
Usei.even?ori % 2 == 0to check even numbers [OK]
Quick Trick: Use i.even? to filter even numbers in loops [OK]
Common Mistakes:
- Printing odd numbers instead of even
- Incorrect condition logic
- Modifying loop variable incorrectly
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