Numbers -11/20, 7/-15, 17/-30 and -3/10 are written in descending order as

Correct Answer is : −310-3/1010−3 > 7−157/-15−157 > −1120-11/2020−11> 17−3017/-30−3017

17/-30 > -11/20 > -3/10 > 7/-15

Correct Answer is : −310-3/1010−3 > 7−157/-15−157 > −1120-11/2020−11> 17−3017/-30−3017

Test Index

CTET 2 Math and Science Sep 2014 Paper

Question : 31 of 120

Marks: +1, -0

Numbers

\frac{-11}{20}

\frac{7}{-15}

\frac{17}{-30}

\frac{-3}{10}

are written in descending order as

Solution:

Given numbers are

\;\;\frac{-11}{20},\;\;\frac{7}{-15},\;\;\frac{17}{-30}

and

\;\;\frac{-3}{10}

Now,

\frac{-11}{20}=-0.55

\;\;\frac{7}{-15}=-0.466

\;\;\frac{17}{-30}=-0.566

\;\;\frac{-3}{10}=-0.3

So, in descending order.

\;\;\frac{-3}{10} > \;\;\frac{7}{-15}>\;\;\frac{-11}{20}>\;\;\frac{17}{-30}

Alternate method

\;\;\frac{-11}{20},\;\;\frac{7}{-15},\;\;\frac{17}{-30},\;\;\frac{-3}{10}

\frac{-33}{60},\;\;\frac{-28}{60},\;\;\frac{34}{60},\;\;\frac{-18}{60}

Now arranging them in descending order,

\;\;\frac{-3}{10}>\;\;\frac{-7}{75}>\;\;\frac{-11}{20}>\;\;\frac{-17}{30}

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