Compare: $21 : 23$ _____ $2 : 5$

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Solution

The correct option is A $>$
Ratio $1 = 21 : 23$
Ratio $2 = 2 : 5$
Now,
$21 \times 5 = 105$ and $2 \times 23 = 46$
For comparing two ratios $a : b$ and $c : d$ , if $a d > b c$ then $a : b > c : d$
Here, $21 \times 5 > 2 \times 23$
$∴ 21 : 23 > 2 : 5$

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