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The third proportional to (x/y + y/x) ...

The third proportional to
`(x/y + y/x) andsqrt(x^2 + y^2)` is

A

`xy`

B

1

C

`x ^(2) y ^(2)`

D

`x ^(2) + y ^(2)`

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The correct Answer is:
A
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ADVANCED MATHS BY ABHINAY MATHS ENGLISH-RATIO & PROPORTION-QUESTIONS
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  9. If a/b= 3/2, then (a ^(2) +b ^(2) )/(a ^(2) - b ^(2)) = ?

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  12. If a/b = c/d =e/f = 4, then (ma ^(2) + nc ^(2) + pe ^(2))/( mb ^(2)...

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  13. If a/b = c/d =e/f = 4, then (m ^(2) a + n^(2) c + p ^(2) e )/( m ^(2...

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  15. If a,b,c gt 0, then (a )/(b +c) = (b)/( c +a) = (a)/(a +b) = ?

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  17. If a,b,c gt 0, then (a )/(2a + b +c ) = (b)/(a + 2b +c)= (c )/(a +b + ...

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  18. If (y )/(x -z) = (y +x)/(z) = (x)/(y) then x :: y :z = ?

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  19. If p /q = r/s , then ((p +q)/( r + s )) = ?

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  20. The ratio of milk and water in a pot is 3:4. If 3l water is added, the...

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