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# All articles with 'OR() excel formula' Tag

## Sumerian Voter Problem [IF formula homework]

Published on Apr 22, 2016 in Excel Challenges

Here is a simple IF formula challenge for you. Go ahead and post your answers in the comments section. Can this person vote in Sumeria? Imagine you are the chief election officer in the great country of Sumeria. You have introduced a new eligibility criteria for voters just before the grand presidential elections of 2016. In order […]

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## CP028: How to tell business logic & rules to Excel?

Published on Jan 22, 2015 in Chandoo.org Podcast Sessions, Random

In the 28th session of Chandoo.org podcast, let’s figure out how to express business rules & logic to Excel.

### What is in this session?

But we all struggle when it comes to modeling real world business conditions in Excel. For example, if you have below business rule to decide how much discount to offer a customer,

• If the customer bought 3 or more times previously and offer 15% discount
• If the customer bought 1 or 2 times previously AND customer’s age is >40, offer 10% discount
• If the customer visited our New York store between 6PM-9PM offer 5% discount
• Else no discount

How would you go about modeling these in Excel?

That is our topic for this podcast session.

In this podcast, you will learn

• The challenge of modeling business logic & rules in Excel
• My struggles with such formulas in early days
• Example business rules & how to write formulas
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## Find-out Days Overlaped [Excel Formula Homework]

Published on Jul 7, 2010 in Featured, Learn Excel

Few days back we have learned how to find if 2 sets of dates overlap using Excel Formulas. For eg. we have learned that to check whether {1 July,2010 to 23 July 2010} overlaps with the date range {15 July, 2010 to 16 August 2010}, we can use a formula like, =if(or(and(x>=a,x<=b),and(a>=x,a<=y)), “Overlap”,”Do not overlap”) […]

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## Check if two ranges of dates overlap [Excel Formulas]

Published on Jun 1, 2010 in Learn Excel

While preparing a project plan, I had a strange problem. I wanted to highlight all the project tasks that fall with-in a certain date range. At the lowest level, the problem is like this: There are 2 ranges of dates (a,b) and (x,y) and I want to know if they overlap (ie at least one […]

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## Writing “Either Or” formula in Excel [Formula Howtos]

Published on Mar 2, 2010 in Excel Howtos, Learn Excel

We all know the AND, OR & NOT formulas in Excel using which you can perform simple logical operations And, Or & Negate. But what if you are the chief of HR at ACME Company, where they have a strange rule on extra allowance like this: Now, to calculate the dates in a month that […]

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## How to Find Dates of Public Holidays using Excel

Published on Dec 24, 2009 in Learn Excel

Lets celebrate these holidays in PHD Style. By learning few excel formulas that you can use to find out dates for some of the popular public holidays like – labor day, memorial day etc. When is Labor Day (US) in 2010? Labor day (the US variant) is celebrated on first Monday of every September. It […]

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## Generating invoice numbers using excel [reader questions]

Published on Jul 20, 2009 in Excel Howtos, Learn Excel

Learn how to generate invoice numbers, tax codes etc. using Microsoft Excel. In this example we will take a real life example shared by Michelle and findout how we can generate invoice numbers using excel formulas. Read more to learn and download the example workbook.

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