The letter K had no particular significance; it was chosen merely to have a phonetically different letter from the letters C and D.
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Any one of the infinitely many ration fractions of the form k/(3*k) where k is a non-zero integer, is an equivalent fraction
It's the ration card number.
What does a circle with a k in it on food mean
Suppose you are given the ratio X/Y.To find an equivalent ration, take ANY positive integer, k. Then (k*X)/(k*Y) is an equivalent ratio.Strictly speaking, k need not be a positive integer: it need not even be a real number. All that is required is that it is not 0.
who invented the ration books