Challenge No. 11: Extract all item codes that are repeated at least in 3 out of 4 lists presented in the question table.
Solved using:Excel (BYCOL, FILTER, LAMBDA), Power Query (List.Combine, List.Distinct, List.Transform), and R.
Table.Group
Groups rows in a table based on specified columns and applies aggregations in Power Query.
Inventory Efficiency!!!
Challenge No. 10: The question table shows inventory levels for materials required to produce products, with specific combinations (1 A, 2 B, 3 C per product).
Solved using:Excel (HSTACK, LAMBDA, LET), Power Query (Table.AddColumn, Table.Group), and R.
Custom Grouping! Part 1
Challenge No. 2: Group the rows from the top, which in each group the total cost be lower than 130$.
Solved using:Excel (HSTACK, IF, LAMBDA), and Power Query (Table.Group).