Which of the following fractions is not in its simplest form?

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$\frac{2}{13}$

$\frac{5}{17}$

$\frac{25}{35}$

$\frac{8}{9}$

answer is A.

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Detailed Solution

A fraction is said to be in its simplest form if its numerator and denominator have no common factor except 1.

In the fraction $\frac{25}{35}$ , the H.C.F. of the numerator and the denominator is 5.

In the fraction $\frac{5}{17}$ , the H.C.F. of the numerator and the denominator is 1.

In the fraction $\frac{2}{13}$ , the H.C.F. of the numerator and the denominator is 1.

In the fraction $\frac{8}{9}$ , the H.C.F. of the numerator and the denominator is 1.

So, the fraction $\frac{25}{35}$ is not in its simplest form.

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