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In simplest form, what type of decimal expansion will ( \frac{56}{154} ) have?

Answer and explanation

Correct answer: Non-terminating recurring

To determine the decimal type of a fraction, first reduce the fraction to its simplest form. Here, 56 and 154 have a common factor of 14, so the fraction becomes 4/11. A rational number has a terminating decimal expansion only when the denominator in simplest form has no prime factors other than 2 and 5. The denominator 11 does not meet this condition.

The division of 4 by 11 continues without ending and produces a repeating pattern, namely 0.363636 and so on. Therefore, its decimal expansion is non-terminating recurring. The correct answer is option C. It is not non-terminating non-recurring, because every rational number has either a terminating decimal or a repeating decimal when written in decimal form.

Related tags

Number-SystemsDecimal-RepresentationSimplest-Form-Test

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