Another number sequence

Cerebral distractions of every kind, mostly but not exclusively Countdown-related.

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Mark Kudlowski
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Another number sequence

Post by Mark Kudlowski »

What is the missing number in this sequence ?

1, 4, 8, 9
2, 3, 6, 7
3, 4, 12, 13
2, 6, 9, ?

Spoilerific Hint:

Pythagoras' Theorem in 3D.
All square, so far.

Last edited by Mark Kudlowski on Sun Sep 28, 2014 12:00 pm, edited 1 time in total.
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Thomas Carey
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Re: Another number sequence

Post by Thomas Carey »

This reminded me of this trainwreck of a discussion.
cheers maus
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