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

Anum = 2 while num <= 10 do puts num num += 2 end

Bnum = 1 while num <= 10 do puts num * 2 num += 1 end

Cnum = 2 while num < 10 do puts num num += 1 end

Dnum = 0 while num <= 10 do puts num num += 2 end

Step-by-Step Solution

Solution:

Step 1: Understand the goal
We want to print even numbers from 2 to 10 inclusive.
Step 2: Check each option for correctness
num = 2 while num <= 10 do puts num num += 2 end starts at 2, increments by 2, and stops at 10, printing 2,4,6,8,10 correctly. Others either print wrong numbers or go beyond 10.
Final Answer:
num = 2 while num <= 10 do puts num num += 2 end -> Option A
Quick Check:
Increment by 2 from 2 to 10 for even numbers [OK]

Quick Trick: Increment by 2 starting at 2 to print evens [OK]

Common Mistakes:

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