In which pair of standards, the no. of girls and boys passed are in inverse proportion?

V & X

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VI & IX

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VI & VIII

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V & IX

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None of these

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Solution

The correct option is B
VI & IX

$\begin{matrix} C l a s s & R a t i o o f r e s u l t o f g i r l s : b o y s V & 4 : 3 V I & 8 : 7 V I I & 2 : 3 V I I I & 3 : 2 I X & 7 : 8 X & 7 : 6 \end{matrix}$

$∴$ From the table it is clear that (VI, IX) and ( Vll , Vlll) are in inverse proportion.

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In which pair of standards, the no. of girls and boys passed are in inverse proportion?

The correct option is B VI & IX ClassRatio of result of girls:boysV4:3VI8:7VII2:3VIII3:2IX7:8X7:6 ∴From the table it is clear that (VI, IX) and ( Vll , Vlll) are in inverse proportion.

The correct option is B
VI & IX

$\begin{matrix} C l a s s & R a t i o o f r e s u l t o f g i r l s : b o y s V & 4 : 3 V I & 8 : 7 V I I & 2 : 3 V I I I & 3 : 2 I X & 7 : 8 X & 7 : 6 \end{matrix}$

$∴$ From the table it is clear that (VI, IX) and ( Vll , Vlll) are in inverse proportion.