Question

The rational number in its standard form is

• A. $\frac{2}{-7}$
• B. $\frac{-2}{-7}$
• C. $\frac{-2}{7}$
• D. none of these

Answer 1

The correct option is C

$\frac{-2}{7}$

Correct option:(c )$\frac{-2}{7}$

Since, $HCF(2,7)=1$ and it has a positive denominator.

Therefore it is in standard form.

Incorrect options:

(a)$\frac{2}{-7}$

Since it has a negative denominator. Therefore it is not in standard form.

Thus this is incorrect.

(b)$\frac{-2}{-7}$

Since it has a negative denominator. Therefore it is not in standard form.

Thus this is incorrect.

(d) none of these

Since one option is correct. Therefore it is incorrect.

Hence, option(c ) is correct.