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Determine Cumulative Sum Based on Rules
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  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️ Intermediate

Determine Cumulative Sum Based on Rules

Challenge No. 49: Generate the output table shown.
Solved using: SQL.

June 6, 2025July 30, 2025
Sort Cities by Populated
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  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Sort Cities by Populated

Challenge No. 169: Order the cities columns on the basis of number of cells populated in descending order.
Solved using: Python.

June 6, 2025July 11, 2025
Uppercase Position Finder
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  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Uppercase Position Finder

Challenge No. 168: Find the positions of uppercase letters and separate them by dashes.
Solved using: Excel VBA.

June 5, 2025July 11, 2025
Find Missing Tuple Number
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  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Find Missing Tuple Number

Challenge No. 167: Pythagorean tuples are those numbers which follow the rule a^2+b^2=c^2 where a, b and c are whole numbers.
Solved using: Python in Excel.

June 5, 2025July 11, 2025
Merge! Part 2
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  • Merging & Joining
  • Omid Challenges
  • Power Query Challenges
  • ⭐️⭐️⭐️ Intermediate

Merge! Part 2

Challenge No. 124: In Question Table 1, dates and prices for a product are provided.
Solved using:Excel (INDEX, LAMBDA, LET), Google Sheets, Power Query (Table.AddColumn), Python, Python in Excel, and R.

June 5, 2025July 11, 2025
List Sales Figures Across Dates
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  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️⭐️⭐️⭐️Complex

List Sales Figures Across Dates

Challenge No. 48: — Input table Quantity data is wrong in picture.
Solved using: SQL.

June 5, 2025July 30, 2025
Porta Cipher Grid Formula
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  • ⭐️ Beginner

Porta Cipher Grid Formula

Challenge No. 166: The grid shown is used in Porta Cipher for Cryptography.
Solved using: Python in Excel.

June 5, 2025
Top Initials of First Ladies
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  • ⭐️⭐️ Easy

Top Initials of First Ladies

Challenge No. 165: List the First Ladies’ names which start with Top 3 most frequently occurring letters.
Solved using: Power Query.

June 4, 2025July 11, 2025
Data Grouping
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  • Crispo Challenges
  • Custom Grouping
  • ⭐️ Beginner

Data Grouping

Challenge No. 43: Group the staff into their respective salary ranges
Dynamic array function allowed, but Extra marks for Legacy solutions or PowerQuery Solution.
Solved using: Python in Excel.

June 4, 2025July 11, 2025
Generate First Disarium List
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  • Indexing & Ranking
  • ⭐️⭐️⭐️ Intermediate

Generate First Disarium List

Challenge No. 164: A Disarium number is that number where sum of each digit raised to the power of its position in the number is equal to number itself.
Solved using: Python in Excel.

June 4, 2025July 11, 2025

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BYROW CHAR CODE CONCAT DROP FILTER HSTACK IF IFERROR INDEX LAMBDA LEFT LEN LET List.Distinct List.Transform LOOKUP MAP MATCH MAX MID MONTH Python Python Automation Python for Data Analysis Python for Excel REDUCE ROW ROWS SCAN SEQUENCE SORT SUBSTITUTE Table.AddColumn Table.Group Table.SelectRows TAKE Text.Combine Text.Split TEXTJOIN TEXTSPLIT TOCOL UNIQUE VSTACK XLOOKUP

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  • By Difficulty
    • ⭐️ Beginner
    • ⭐️⭐️ Easy
    • ⭐️⭐️⭐️ Intermediate
    • ⭐️⭐️⭐️⭐️ Advanced
    • ⭐️⭐️⭐️⭐️⭐️Expert
    • ⭐️⭐️⭐️⭐️⭐️⭐️Complex
  • By Topic
    • Advanced Mathematics Problem
    • Aggregation & Summarization
    • Column Splitting
    • Column Transformation
    • Custom Grouping
    • Data Cleaning
    • Data Transformation
    • Date & Time Handling
    • Financial Problems
    • Indexing & Ranking
    • Merging & Joining
    • Missing Values
    • Pivot & Unpivot
    • Text Processing
  • By Creator
    • Omid Challenges
    • ExcelBI Excel Challenges
    • ExcelBI Power Query Challenges
    • Crispo Challenges
  • By Software
    • DAX Challenges
    • Excel Challenges
    • Excel VBA Challenges
    • Google Sheets Challenges
    • Office Script Challenges
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    • R Challenges
    • SQL Challenges
  • Books
    • 96 Common Challenges in Power Query