Question

Identify the rational number which does not belong with the other three -4/5,-3/7,-2/9,9/-11,7/-10 ... why so

Answer 1

Given below are the rational numbers as:

$\frac{-4}{5}, \frac{-3}{7}, \frac{-2}{9}, \frac{-9}{11} , \frac{-7}{10}$

We have to find two rational numbers which are different from the other three rational numbers.

Consider the decimal expansions of the given rational numbers.

Since, $\frac{-4}{5} = -0.8$

$\frac{-3}{7} = -0.428571428571......$

$\frac{-2}{9} = -0.22222222.....$

$\frac{-9}{11} = -0.8181818181...$

$\frac{-7}{10} = -0.7$

So, we can see that $\frac{-4}{5} , \frac{-7}{10}$ have terminating decimal expansions whereas the other rational numbers have non terminating repeating decimal expansions.

Therefore, $\frac{-4}{5} , \frac{-7}{10}$ are the different rational numbers which do'not belong to the given rational numbers.

Answer 2

Answer:

-3/7 is the answer the above one is completely wrong so pls support me tooo