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What is the correct statement about the decimal form of 7/66?

Answer and explanation

Correct answer: It is a non-terminating repeating decimal

For a rational number written in lowest terms, the decimal expansion terminates only when the denominator has no prime factors other than 2 and 5. The fraction 7/66 is already in lowest terms, and 66 = 2 × 3 × 11. Since the denominator contains 3 and 11, its decimal expansion cannot terminate; every rational number nevertheless has either a terminating or a repeating decimal expansion. Therefore 7/66 is non-terminating but repeating, so option B is correct. The decimal begins 0.1060606..., showing a recurring pattern. Option A ignores the factors 3 and 11, option C confuses repeating rational decimals with irrational decimals, and option D is impossible because the fraction lies between 0 and 1.

Related tags

Decimal RepresentationRepeating DecimalsRational NumbersNumber SystemsMathematicsClass 9 Mcq

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