You want to print all even numbers from 2 to 10 using an until loop in Ruby. Which code snippet correctly does this?

hard📝 Application Q8 of 15

Ruby - Loops and Iteration

You want to print all even numbers from 2 to 10 using an until loop in Ruby. Which code snippet correctly does this?

Anum = 2 until num >= 10 do puts num num += 2 end

Bnum = 2 until num > 10 do puts num num += 2 end

Cnum = 2 until num < 10 do puts num num += 2 end

Dnum = 2 until num == 10 do puts num num += 2 end

Step-by-Step Solution

Solution:

Step 1: Understand the loop condition
We want to print even numbers up to 10, including 10, so loop should run until num > 10.
Step 2: Check increments and output
Starting at 2, incrementing by 2 each time prints 2,4,6,8,10 correctly.
Final Answer:
num = 2 until num > 10 do puts num num += 2 end -> Option B
Quick Check:
Until loop condition and increment = A [OK]

Quick Trick: Use until num > max for inclusive upper bound [OK]

Common Mistakes:

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