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A piece of folk math: a child asked a fl...

A piece of folk math: a child asked a flock of birds, "How many are you? A bird replied. We and us again, with half of us and half of that With one more, Would make hundred" How many birds were there?

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99, is `(1+1+1/2+1/4)` xx of numbers of birds. That is, 99 is `2 3/4=11/4` xx of the number of birds. ie, Number of birds `` beginarray/l =4/11 part of 99 =99 xx 4/11=36 endarray ...
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