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What is the common difference of 1/2, 1, 3/2, 2, …?

Answer and explanation

Correct answer: 1/2

The defining property of an arithmetic progression is a fixed difference between consecutive terms. Subtract the first term from the second: d = 1 - 1/2 = 1/2. Verify it with the remaining displayed pairs: 3/2 - 1 = 1/2 and 2 - 3/2 = 1/2. Since every step adds one-half, the common difference is 1/2, so option A is correct. The numbers 1, 3/2, and 2 are terms of the progression, not the fixed increment. A common error is to confuse the next term with the difference or to subtract the numerators without considering the denominator. Writing 1 as 2/2 makes the first subtraction especially clear: 2/2 - 1/2 = 1/2.

Related tags

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

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