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Total0 / 20
Easy0 / 7
Medium0 / 11
Hard0 / 2
Data Manipulation0/20 solved
1
Count Events Per User
Data Manipulation
StripeEasy—
2
Email Domain Breakdown
Data Manipulation
GoogleEasy—
3
Fill Missing Scores
Data Manipulation
AirbnbEasy—
4
Filter Active Users
Data Manipulation
MetaEasy—
5
Join Users and Orders
Data Manipulation
AmazonEasy—
6
Revenue by Product
Data Manipulation
StripeEasy—
7
Top 5 Customers by Spend
Data Manipulation
AmazonEasy—
8
Crosstab Product by RegionPro
Data Manipulation
AmazonMedium—
9
Customer Spend TierPro
Data Manipulation
StripeMedium—
10
Days Between PurchasesPro
Data Manipulation
AmazonMedium—
11
Dedup Keep LatestPro
Data Manipulation
MetaMedium—
12
Expanding Cumulative RevenuePro
Data Manipulation
AmazonMedium—
13
Melt Product MetricsPro
Data Manipulation
AirbnbMedium—
14
Month-Over-Month Revenue GrowthPro
Data Manipulation
StripeMedium—
15
Monthly Revenue SummaryPro
Data Manipulation
GoogleMedium—
16
Normalize Product NamesPro
Data Manipulation
AmazonMedium—
17
Pivot Monthly SalesPro
Data Manipulation
GoogleMedium—
18
Rolling 7-Day Signup CountPro
Data Manipulation
MetaMedium—
19
Cohort Retention Month 1Pro
Data Manipulation
AirbnbHard—
20
Funnel Conversion RatesPro
Data Manipulation
StripeHard—

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