surface of a spherical planet
What is the distance from point P(x,y) to the line Ax + By + C = 0?
Symmetry of vector
Rounding off numbers to n decimals
Given a square and a circle, please decide whether the square covers more area.
Acidity of vinegar and salts
chance in percent for minimum K heads when a good coin is tossed N times?
Multiply to the limit?
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