#1
Calculate margin with a zero-revenue guard
SalesBeginner
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#2
Apply a percentage discount
Product pricingBeginner
Open challenge#3
Total a week of expenses
ExpensesBeginner
Open challenge#4
Average customer response time
CustomersBeginner
Open challenge#5
Flag overdue orders
OrdersBeginner
Open challenge#6
Calculate reorder quantity
InventoryBeginner
Open challenge#7
Count campaigns above target
MarketingBeginner
Open challenge#8
Sum approved budget items
BudgetsIntermediate
Open challenge#9
Round a unit price
Product pricingBeginner
Open challenge#10
Extract a product prefix
Text cleanupBeginner
Open challenge#11
Flag overtime hours
Employee hoursIntermediate
Open challenge#12
Look up a customer tier
Lookup tablesIntermediate
Open challenge#13
Extract an email domain
Text cleanupIntermediate
Open challenge#14
Add sales tax to a subtotal
SalesBeginner
Open challenge#15
Calculate a sales conversion rate
SalesBeginner
Open challenge#16
Look up inventory value
InventoryIntermediate
Open challenge#17
Sum meal expenses
ExpensesIntermediate
Open challenge#18
Average overtime hours
Employee hoursIntermediate
Open challenge#19
Calculate click-through rate
MarketingBeginner
Open challenge#20
Flag over-budget departments
BudgetsBeginner
Open challenge#21
Count missing customer emails
CustomersBeginner
Open challenge#22
Extract the middle SKU segment
Text cleanupIntermediate
Open challenge#23
Round up shipping boxes
InventoryIntermediate
Open challenge#24
Find peak daily demand
InventoryBeginner
Open challenge#25
Count active customer IDs
CustomersBeginner
Open challenge#26
Look up price with a fallback
Product pricingIntermediate
Open challenge#27
Calculate days until due
DatesBeginner
Open challenge#28
Flag priority tickets
CustomersIntermediate
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