Quote:
Originally Posted by nikonian
Having been a electro/electronic/mechanic for 40 years, now long since retired I can still put my hand to most things. Took up a bit of programming when I first retired but just love electronics. Heres a poser I found out by accident when programming. Excluding 1 what makes the number 81 unique. Answers on the back of A £10 note.
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Damn!!
I've run out of £10 notes. Only got 20's & 50's