Category: Miscellany

Combinations, Combinations. A challenge

Posted on by jkpieterse

In case you’re bored stiff during your holiday, here’s a nice Excel challenge for you all.

In my newsletter for May 2019 I showed you a trick to get all possible combinations of two lists. This time I have a related problem. Suppose I have 10 ballot tickets. My job is to draw 5 random tickets from that set of 10 repeatedly until I have drawn all possible combinations:

The challenge I would like to give you all:
Please use any technique in Excel to list all possible unique combinations of ticket numbers drawn this way. Note that the order in which the tickets are drawn makes no difference and that each number can only be drawn once per set of 5. This means that a draw of (1, 2, 3, 4, 5) is considered the same as (5, 4, 3, 2, 1) or (2, 1, 3, 4, 5).

What’s in it for you?

The 5 best submissions will receive:

Send your solutions to info@jkp-ads.com using this subject line: “JKPADS Combinations Challenge”

Submission ends on September 9, 2019

The Amsterdam Excel Summit 2017

Posted on by jkpieterse

Hi Excel lovers,

Wanted to draw your attention to our fourth

Amsterdam Excel Summit

April 18 and 19, 2017

We’ve worked hard to get an exciting line-up of speakers presenting on a wide variety of Excel subjects during our two-day conference.

So if you’re an Excel power-user, this is one of those one-of-a-kind conferences you cannot afford to miss!

Registration is now open

Hope to see you in Amsterdam on April 18 and 19 2017!

Jan Karel Pieterse, Tony de Jonker

topexcelclass.com

Happy birthday Excel!

Posted on by jkpieterse

September 30, 1985 Excel was launched and I therefore wish Excel a very happy birthday and many healthy years to come!

Debra Dalgleish over at the contextures blog has gathered a nice set of stories on how people first “met” Excel.

To celebrate this great event, I’m offering a 30 percent discount on my products for 30 days.
Redeem your discount on RefTreeAnalyser and The Excel File Remediation tool by entering this coupon code: EXCEL30

So have a piece of cake with your coffee today and have one of those “those were the days” moments.

Jan Karel Pieterse

www.jkp-ads.com

Summer sale at jkp-ads.com

Posted on by jkpieterse

Hi there!

Now that summer has arrived I’ve planned a summer sale. From July 1st up to July 10th I offer a 25% discount on both products I sell:
RefTreeAnalyser
and
The Excel File Remediation Utility
To get your discount, just go through the purchasing process and enter this coupon code to redeem your discount:
JKPADS-Summer2015

Regards and have a great summer!

Jan Karel Pieterse

www.jkp-ads.com

The Amsterdam Excel Summit Last-minute discount

Posted on by jkpieterse

Hi everyone,

Our event is coming real soon now and we’re very much looking forward to it. We have outstanding speakers and excellent content, so everything is lined up to make this a superb Excel event.

To entice the undecisive Excel lovers to make up their minds and subscribe after all, we decided to make it even more attractive to attend.

As of March 27st, 2015 we offer a € 200 last-minute discount per attendee for both days and € 100 for one day!

Register now at http://topexcelclass.com/index.php/amsterdam-excel-summit/registration/ and meet us on April 13th and 14th in Amsterdam.

Regards,

Jan Karel Pieterse

www.jkp-ads.com

The Amsterdam Excel Summit 2015

Posted on by jkpieterse

Hi Excel lovers!

Last year we had a terrific Excel event in Amsterdam in May. This year we’re in for a repeat!

I have just opened registration for what is going to be the place to be for anyone Excel-minded. We have two days full of excellent subjects. An impression:

  • Three in-depth Power Query sessions
  • Two sessions on improving your spreadsheet quality
  • Two sessions on charting, making your life easier and enabling you to build charts you didn’t even know you could
  • Two sessions on pivot tables and formulas
  • A session on how to build UDFs

So why don’t you book your flights and hotels and join us on April 13th and 14th for an unsurpassed Excel experience!

Regards,

Jan Karel Pieterse

Recent Update of Office causes problems with ActiveX controls

Posted on by jkpieterse

Hi,

Yesterday, I installed a host of updates, including some of Office.
As it happens, I tried to add an ActiveX control to a worksheet and received an error.
After some research I discovered the cause of the error to be two-fold:

1. The controls were updated by the update
2. Excel did not clean up after itself properly and left some temporary files behind.

The solution is to:
– Quit Excel
– Open Explorer
– Select C: drive
– Search for *.exd
– Remove all files found.

Hope this helps other people who might be suffering from the same problem.

Regards,

Jan Karel Pieterse
www.jkp-ads.com

#####UPDATE Dec 22, 2014#####
Microsoft has published a so-called Fixit to make resolving this matter easier:
https://support.microsoft.com/kb/3025036/EN-US?wa=wsignin1.0