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If x ^(2) + y ^(2) + z ^(2) = xy + yz + ...

If `x ^(2) + y ^(2) + z ^(2) = xy + yz + zx,` then the value of `(3x ^(4) + 7y ^(4) + 5z ^(4))/( 5x ^(2) y ^(2) + 7y ^(2) z ^(3) + 3z ^(3) x ^(2))` is

A

0

B

`-1`

C

2

D

1

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CHAMPION PUBLICATION-2015 TIER-II PAPER(17)-EXERCISE
  1. Base of a right pyramid is a square of side 10 cm. If the height of th...

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  2. The centroid of a triangle ABC is G. The area of triangle ABC is 60 cm...

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  3. If x ^(2) + y ^(2) + z ^(2) = xy + yz + zx, then the value of (3x ^(4...

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  4. If 3 ( a^(2) + b^(2) + c^(2)) = (a + b + c)^(2) then the relation be...

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  5. A boat moves downstream at the rate of 1 km in 7 1/2 minutes and upstr...

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  6. If (3x - 2y) : (2x + 3y) = 5 : 6 then the value of ((root(3)(x)+root(3...

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  7. The diameter of each wheel of a car is 70 cm. If each wheel rotates 40...

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  8. In a school there were 1554 students and the ratio of the number of th...

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  9. There would be a 10% loss, if rice is sold at F 54 per kg. To earn a p...

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  10. What part of a ditch 48 m long, 16.5 m broad and 4 m deep can be fille...

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  11. A sum of money is paid back in two annual instalments of Rs.17, 640 ea...

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  12. If 5 cos theta+12 sin theta=13, 0^@< theta <90^@, then the value of si...

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  13. If a hemisphere is melted and four spheres of equal volume are made, t...

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  14. If 90 men can do a certain job in 16 days, working 12 hours day, then ...

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  15. The perimeter of a rhombus is 60 cm and one of its diagonal is 24 cm. ...

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  16. If x - sqrt3 - sqrt2 = 0 and y - sqrt3 + sqrt2 =0, then the value of ...

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  17. Three glasses of equal volume contains acid mixed with water .The rati...

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  18. The H.C.F and L.C.M of two numbers are 21 and 84 respectively. If the ...

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  19. एक संख्या को जब 361 से विभाजित किया जाए तो शेषफल 47 रहता है । यदि उसी ...

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  20. There is a wooden sphere of radius 6 sqrt3 cm. The surface area of the...

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