Ruby - Operators and Expressions
Given variables x = 8 and y = 3, which Ruby expression correctly calculates the remainder after subtracting y from x and then dividing by 4?
Given variables x = 8 and y = 3, which Ruby expression correctly calculates the remainder after subtracting y from x and then dividing by 4?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Calculate x - y
8 - 3 equals 5.Step 2: Calculate remainder of 5 divided by 4
5 % 4 equals 1.Step 3: Match expression to calculation
Only (x - y) % 4 matches the described operation.Final Answer:
(x - y) % 4 -> Option CQuick Check:
Subtract then modulo = (x - y) % 4 [OK]
Quick Trick: Use parentheses to control operation order [OK]
Common Mistakes:
- Misplacing parentheses
- Applying % before subtraction
- Confusing operators order
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