[Solved] How can you use the loop method to sum numbers from 1 to 10? — Ans: sum = 0 num = 1 loop do break if num > 10 sum += num num += 1 end puts sum | Ruby

Ruby - Loops and Iteration

How can you use the loop method to sum numbers from 1 to 10?

Asum = 0 num = 1 loop do sum += num break if num == 10 num += 1 end puts sum

Bsum = 0 num = 1 loop do break if num > 10 sum += num num += 1 end puts sum

Csum = 0 num = 1 loop do sum += num num += 1 break if num > 10 end puts sum

Dsum = 0 num = 1 loop do sum += num num += 1 break if num == 10 end puts sum

Step-by-Step Solution

Solution:

Step 1: Understand the summing logic
We want to add numbers 1 through 10 inclusive.
Step 2: Check each option's break condition and sum
sum = 0 num = 1 loop do sum += num break if num == 10 num += 1 end puts sum breaks when num == 10, but increments after break, so 10 is included.
sum = 0 num = 1 loop do break if num > 10 sum += num num += 1 end puts sum breaks if num > 10, so sums 1 to 10 correctly.
sum = 0 num = 1 loop do sum += num num += 1 break if num > 10 end puts sum breaks if num > 10 after increment, so sums 1 to 10.
sum = 0 num = 1 loop do sum += num num += 1 break if num == 10 end puts sum breaks if num == 10 after increment, so 10 is not included.
Step 3: Identify the best option
sum = 0 num = 1 loop do break if num > 10 sum += num num += 1 end puts sum cleanly sums 1 to 10 and breaks before exceeding 10.
Final Answer:
Option B correctly sums numbers 1 to 10 using loop -> Option B
Quick Check:
Break before sum exceeds 10 = correct sum [OK]

Quick Trick: Break before exceeding limit to include last number [OK]

Common Mistakes:

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