Skip to content
OmidBI Logo – Expert in Power Query, Excel, and Business Intelligence Solutions

OmidBI

  • 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
    • Power Query Challenges
    • Python Challenges
    • R Challenges
    • SQL Challenges
  • Books
    • 96 Common Challenges in Power Query
Find Palindromes by One Deletion
Posted in
  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Find Palindromes by One Deletion

Challenge No. 374: A Palindrome word is that which is same even read backwards.
Solved using: Python in Excel.

September 5, 2025July 22, 2025
Count Digits in Square Range
Posted in
  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Count Digits in Square Range

Challenge No. 373: Count the number of of Ds into square of numbers from N1 to N2 (both inclusive).
Solved using: Python.

September 4, 2025July 22, 2025
Fruit Pair Frequency Grid
Posted in
  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️ Intermediate

Fruit Pair Frequency Grid

Challenge No. 148: Generate the grid shown where count need to be populated at intersections of rows and columns.
Solved using: Python.

September 4, 2025July 14, 2025
Draw Inverted Triangle Shape
Posted in
  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Draw Inverted Triangle Shape

Challenge No. 372: Draw inverted right angled triangles as shown for an r value.
Solved using: Python.

September 4, 2025July 22, 2025
Filter Products by Date Range
Posted in
  • Date & Time Handling
  • ExcelBI Excel Challenges
  • ⭐️⭐️ Easy

Filter Products by Date Range

Challenge No. 371: This problem is contributed by Mehmet Çiçek
Find the list of products (alphabetically sorted) for the date range given in columns H & I from the table given in columns A to F.
Solved using: DAX.

September 3, 2025July 22, 2025
Fill Down and Up by Customer
Posted in
  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️⭐️⭐️⭐️Complex

Fill Down and Up by Customer

Challenge No. 147: Fill down / up all 4 columns for different customer IDs.
Solved using: Python.

September 3, 2025July 14, 2025
List Cyclops Palindromic Numbers
Posted in
  • ExcelBI Excel Challenges
  • ⭐️ Beginner

List Cyclops Palindromic Numbers

Challenge No. 370: A Cyclops number is a number that has a zero in the center (so, it needs to have odd number of digits).
Solved using: Python.

September 3, 2025July 22, 2025
Perform Faro Shuffle Types
Posted in
  • ExcelBI Excel Challenges
  • ⭐️ Beginner

Perform Faro Shuffle Types

Challenge No. 369: Faro Shuffle – Divide the data in two equal parts (data will always be even, so two equal parts).
Solved using: DAX.

September 2, 2025July 21, 2025
Boundary Rows per Threshold
Posted in
  • Custom Grouping
  • ExcelBI Power Query Challenges
  • ⭐️⭐️⭐️⭐️ Advanced

Boundary Rows per Threshold

Challenge No. 146: For a group –
List the last row where value < Threshold and also list the first row where value > Threshold
If more than one row meets the criterion, then capture all those rows.
Solved using: Python in Excel.

September 2, 2025July 14, 2025
Encrypt Text with Multi-Tap Cipher
Posted in
  • ExcelBI Excel Challenges
  • ⭐️⭐️ Easy

Encrypt Text with Multi-Tap Cipher

Challenge No. 368: Encrypt the given words using Multi Tap Cipher.
Solved using: Python.

September 2, 2025July 21, 2025

Posts pagination

Previous 1 … 43 44 45 … 117 Next
  • 96 Common Challenges in Power Query
  • Advanced Mathematics Problem
  • Aggregation & Summarization
  • Books
  • Column Splitting
  • Column Transformation
  • Crispo Challenges
  • Custom Aggregation & Summarization
  • Custom Grouping
  • Data Cleaning
  • Data Transformation
  • data validation
  • Date & Time Handling
  • Excel Challenges
  • ExcelBI Excel Challenges
  • ExcelBI Power Query Challenges
  • Financial Problems
  • Indexing & Ranking
  • Merging & Joining
  • Missing Values
  • Omid Challenges
  • Pivot & Unpivot
  • Power Query Challenges
  • Python Challenges
  • Text Processing
  • ⭐️ Beginner
  • ⭐️⭐️ Easy
  • ⭐️⭐️⭐️ Intermediate
  • ⭐️⭐️⭐️⭐️ Advanced
  • ⭐️⭐️⭐️⭐️⭐️Expert
  • ⭐️⭐️⭐️⭐️⭐️⭐️Complex

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

Recent Posts

  • Max Total on Consecutive Days
  • Extract Valid Year Ranges
  • Swap Grid Diagonals
  • Pivot with Total Line
  • Remove One Letter Palindrome

Recent Comments

No comments to show.
Copyright © 2026 OmidBI.
Powered by WordPress and HybridMag.
  • 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
    • Power Query Challenges
    • Python Challenges
    • R Challenges
    • SQL Challenges
  • Books
    • 96 Common Challenges in Power Query