For some reason, he says, three is a magic number when it comes to the ideal blend of disciplines in your background.

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Seventy-five percent is a magic number in my mind -- 70-75 percent -- because that means the cost of electricity of photovoltaics is less than the cost of new fossil energy.

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The problem is that big numbers of that sort can either scare investors into thinking a target is unobtainable or force them into a risky glide path in search of returns to reach that magic number.

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Sooty is being offered with a number of other items including a magic wand, books, badges and rosettes.

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"From a wedding planning perspective, 12 months is kind of the magic number, " Winikka said.

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Or is it some magic compromise time between all of those, where a number of factors converge to make the perfect time to buy an airplane ticket?

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Dortmund needed to win to stop Bayern from clinching the Bundesliga title mathematically, but with the Bavarians sporting a 20-point lead and just seven games to go, it is pretty much a foregone conclusion, like a baseball team with a "magic number" of one in August.

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While there is no magic number when it comes to hours of sleep, there are a few effects of a lack of enough sleep.

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It's true that neither is likely to get to 300 wins, but that magic round number has become very much outdated as a benchmark in this era of five-man pitching rotations and increased emphasis on relief pitching.

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