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What is the common difference of the arithmetic progression (3/4, 5/4, 7/4, 9/4, …)?

Answer and explanation

Correct answer: 1/2

The defining property of an arithmetic progression is that the difference between successive terms is constant. Since all terms here have denominator 4, subtract the numerators while keeping the denominator: 5/4 - 3/4 = 2/4 = 1/2. Check the next pairs as well: 7/4 - 5/4 = 2/4 = 1/2 and 9/4 - 7/4 = 2/4 = 1/2. Thus the common difference is 1/2, so option B is correct. Option A would result from incorrectly treating the numerator increase as 1/4. Option C is the first term, not the difference, and option D is not obtained from subtracting consecutive terms. Simplifying 2/4 to 1/2 is necessary for the standard answer.

Related tags

Arithmetic-ProgressionFractionsCommon-DifferenceIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics

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