Data Sufficiency with arithmetic, algebra, and value cases

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By the end you’ll be able to

determine sufficiency in arithmetic and algebra problems involving equations, expressions, ratios, and proportions
test integer, fraction, zero, negative, and positive cases when variable restrictions are not fully specified
evaluate sufficiency in number-property settings involving divisibility, parity, remainders, and factors

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combine statements efficiently to determine whether together they resolve all valid cases

avoid common Data Sufficiency errors such as assuming unnecessary positivity, integrality, distinctness, or nonzero values

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