ABCDE * 4 = EDCBA

As soon as we got online and connected, Lucas said: “Can I show you something?”

“Sure”, I replied.

He brought up TextEdit and started typing, and explained: “I encountered a problem in our math class which is similar to what we played before. It looked like ABCDE * 4 = EDCBA with A, B, C, D and E each being a digit.”

21978 * 4 = 87912

“Do you want me to show how it holds?”he continued, “Here is the vertical form”.

2 1 9 7 8
*       4
__________
8 7 9 1 2

Then I realized that yes we did write a small piece of code together to search solutions of a similar math problem a few months ago.

Ah ha, I’ll challenge other kids with this one. Stay tuned. ;-)

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