Select positive rational numbers from given set . 1/2,(-1/-7),(-3)/5, 7/9, -(-8/-9) .

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1/2, (-1/-7),7/9

only 1/2

only -(-8/-9)

1/2, -(-8/-9)

answer is A.

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Detailed Solution

only 1/2, (-1/-7), 7/9 are positive rational number because to be positive rational both numerator and denominator must be either positive or negative.

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