You may also like

problem icon

Exploring Wild & Wonderful Number Patterns

EWWNP means Exploring Wild and Wonderful Number Patterns Created by Yourself! Investigate what happens if we create number patterns using some simple rules.

problem icon

Divisibility Tests

This article takes the reader through divisibility tests and how they work. An article to read with pencil and paper to hand.

problem icon

Steps to the Podium

It starts quite simple but great opportunities for number discoveries and patterns!

Investigating Pascal's Triangle

Stage: 2 and 3 Challenge Level: Challenge Level:2 Challenge Level:2

I think that it's time to look at Pascal's Triangle afresh. So, let's see what happens when we turn it around in a special way.
So we start with the layout as usual, turn it anticlockwise 45 degrees and then take off the top line of ones.
Turn1 Turn 2 Turn3
So the first 9 lines would look like this ;

corrected pascal
BUT if we take the digital roots of the numbers and see the first 30 lines we have a new look to Pascal's Triangle as shown below.


1st30

So here you have an awful lot of numbers in rows and columns to explore.

Those of you with some spreadsheet experience (or those of you that are quick to learn such things!) should go to the HINT at this point, before going further.

Some starting points for further explorations.

1. On my spreadsheet I decided to explore the rows that are multiples of 9 as I had noticed that there were a lot of 141's and 171's in those lines. Because that is what I wanted to explore I only wrote down the first number that comes after the patterns I was exploring [that's why there are lots of spaces in two out of every three rows.]

every9
So you could do a similar thing, looking at line numbers of a different multiple.
If you do a few you then could compare your discoveries.

2. You could take just one line [e.g.30] and use the spreadsheet to extend it very far.
Here I've taken line 30, and grouped the numbers in that row in 9's and then three 9's together and underneath each other. I did this because my eyes led me to some interesting repetitions. I then noted down things according to the columns I had placed them under.

Line30
See what other things you can notice with this line or any other that you choose.

a) Look for additions that are interesting;
b) Look at repeats of numbers;
c) Look for reflections of patterns.

AND see if you can explainWHY? these patterns are occurring.