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numbers and algebraic expressions
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polynomials
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logarithm
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trigonometry
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combinatorics
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elements of statistics
kropki game
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Concentration of a solution is the ratio of mass of solute to the mass of solution usually given in percent. C_p = (m_s / m) * 100%, m_s - mass of solute, m - mass of solution, that is sum of the mass solute and solvent (usually water)