All articles with 'unique' Tag

Find out if a number has repetitive digits [formula homework]

Published on Oct 3, 2017 in Formula Challenges
Find out if a number has repetitive digits [formula homework]

Time for a quick formula finesse check. Let’s say you have a number in A1. What formula can you use to find out if it has duplicate digits.

For example, if A1 has 123405, then answer should be FALSE

and if A1 has 123455, then answer should be TRUE

Go ahead and post your answers (formulas, VBA or M script) in the comments section.

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Who is the most consistent seller? [BYOD]

Published on Feb 18, 2015 in Analytics, Excel Howtos, Pivot Tables & Charts
Who is the most consistent seller? [BYOD]

Who is the most consistent of all?

Imagine you are a category manager at a large e-commerce company. Your site offers various products, but you don’t really make these products. You list products made by other vendors on your site. Every day, these vendors would send you invoices for the amount of product they have sold. Above is a snapshot of such invoices.

Looking at this list, you have a few questions.

  1. Who is the best seller?
  2. Who is the most active seller?
  3. Who is the most consistent seller?
  4. Which seller has fewest invoices?

Let’s go ahead and answer these using Excel. Shall we?

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Prevent Duplicate Data Entry using Cell Validations

Published on Oct 26, 2009 in Excel Howtos
Prevent Duplicate Data Entry using Cell Validations

We all know that data validation is a very useful feature in Excel. You can use data validation to create a drop-down list in a cell and limit the values user can enter. But, do you know that you can use data validation in a multitude of ways to prevent users from entering wrong data?

Here is a practical application: Prevent users from entering duplicate values in a range of cells.

For eg. you are making an invoice. Wouldn’t it be cool if Excel prompted you when you enter a duplicate line item so that increase the item quantity instead of repeating it.

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Create a number sequence for each change in a column in excel [Quick Tip]

Published on Jun 29, 2009 in Excel Howtos, Learn Excel
Create a number sequence for each change in a column in excel [Quick Tip]

Here is a quick formula trick you can use to generate sequence numbers that only increment when there is a change. Assuming the sequence of values are in column C from C3, you can write the following formula in B4 onwards (B3 will be 1, wake up…) =IF(C4=C3,B3,B3+1) Now just copy paste the formula over […]

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What are the formulas you wish Excel had ?

Published on Jan 13, 2009 in Featured, Learn Excel

Here is a list of formulas I wish MS Excel had. Alas, we need to build some work-arounds to solve them though.

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