LLD - Design — Splitwise (Expense Sharing)Which of these is the correct way to test a financial calculation in Splitwise's logic?ATest if the app crashes when opening settingsBCheck if the sum of all debts equals the total expensesCVerify the app's background color changes on expense additionDCheck if the user profile picture uploads correctlyCheck Answer
Step-by-Step SolutionSolution:Step 1: Understand what financial logic testing involvesIt involves verifying calculations related to money, such as debts and expenses.Step 2: Identify the correct test for financial logicEnsuring debts sum up correctly to total expenses confirms calculation accuracy.Final Answer:Check if the sum of all debts equals the total expenses -> Option BQuick Check:Sum of debts = total expenses test = Check if the sum of all debts equals the total expenses [OK]Quick Trick: Sum debts to total expenses to test financial logic [OK]Common Mistakes:Testing UI or unrelated app features instead of financial logicConfusing app crashes with calculation tests
Master "Design — Splitwise (Expense Sharing)" in LLD9 interactive learning modes - each teaches the same concept differentlyLearnWhyDeepArchTryChallengeDesignRecallScale
More LLD Quizzes Advanced LLD Concepts - Domain-Driven Design basics - Quiz 1easy Design — Chess Game - Observer pattern for UI updates - Quiz 8hard Design — Food Delivery System - Delivery agent assignment - Quiz 10hard Design — Food Delivery System - Order tracking state machine - Quiz 9hard Design — Food Delivery System - Order tracking state machine - Quiz 15hard Design — Hotel Booking System - Booking conflict resolution - Quiz 15hard Design — Hotel Booking System - Availability checking - Quiz 2easy Design — Hotel Booking System - Hotel, Room, Booking classes - Quiz 6medium Design — Online Shopping Cart - Product, Cart, Order classes - Quiz 8hard Design — Splitwise (Expense Sharing) - User, Group, Expense classes - Quiz 4medium