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logic & maths

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tpw536w | 15:44 Thu 17th Dec 2009 | Quizzes & Puzzles
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1)What's unique about the number 2?

2)Ditloid
4 L F

3)This was taken from an o level maths paper in 1957 ( 12 pennies = 1 shilling & 20 shillings = 1 pound) The cost of electricity used when 40 100 watt lamps are switched on for 12 hours is 4 shillings & 6 pence. Calculate the cost when 32 100 watt lamps are switched on for 20 hours.

Thanks for any help
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"1)What's unique about the number 2?"

it always smell awful. stink stink stink!

(sorry, couldn't help myself)
1 - Only even prime number?
1 2 is the only number that gives the same result added to itself as it does times by itself
2. Four legged friend?
I make number 3 six shillings
Question Author
Thanks squarebear, grasscarp , leedsgirl & what can I say society!!!
Apart from 0 eh grasscarp?

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