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(1)/(15)+(1)/(35)+(1)/(63)+(1)/(99)+(1)/...

`(1)/(15)+(1)/(35)+(1)/(63)+(1)/(99)+(1)/(143)+(1)/(195)=?`

A

`(1)/(15)`

B

`(7)/(15)`

C

`(2)/(15)`

D

`(4)/(15)`

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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MAHESH MISHRA-सरलीकरण -1 C. प्रतियोगी परीक्षाओं हेतु अभ्यास प्रश्न
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  2. ((1)/(20)+(1)/(30)+(1)/(42)+(1)/(56)+(1)/(72)+(1)/(90)+(1)/(110))div(7...

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  3. (1)/(15)+(1)/(35)+(1)/(63)+(1)/(99)+(1)/(143)+(1)/(195)=?

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  4. [(1.2.4+2.4.8+3.6.12+…)/(1.3.9+2.6.18+3.9.27+..)]^(1/3) का मान ज्ञात क...

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  5. (1)/(5)-[(2)/(5)+{(3)/(5)+((3)/(5)-bar((1)/(5)+(2)/(5)))}]

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  6. (2)/(3-(1)/(2-(1)/(2+(1)/(3+(1)/(3)))))xx(17)/(18)=?

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  7. (1 + (1)/(2))(1 + (1)/(3))+(1 + (1)/(4))(1 + (1)/(5))....(1 + (1)/(x))...

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  8. परिमेय व्यंजकों को सरल कीजिए। (x)/((x-y)(x-z))+(y)/((y-z)(y-x))+(z)/...

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  9. ((4(1)/(2))-(3(3)/(4)))/((4(1)/(2))^(2)-(3(3)/(4))^(2))=?

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  10. (((3)/(4))^(6)-1)/(1+((3)/(4))^(4)+(9)/(16))=?

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  11. यदि (x+(1)/(x))=2 हो, तो (x^(4)+(1)/(x^(4)))=?

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  12. यदि (b^(2)+(1)/(b^(2)))=6 हो, तो (b^(3)+(1)/(b^(3)))=?

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  13. यदि (x+(1)/(x))=2sqrt3 हो, तो x^(3)-(1)/(x^(3))=?

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  14. यदि (a+b+c)=12 तथा (ab+ac+bc)=32 हो, तो a^(2)+b^(2)+c^(2)=?

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  15. यदि x-y=4 तथा xy=21 हो, तो x^(3)-y^(3)=?

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  16. यदि a=4.9,b=3.2 तथा c=-8.1 हो तो a^(3)+b^(3)+c^(3)=?

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  17. ((782+512)^(2)-(782-512)^(2))/(782xx512)=?

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  18. ((2)/(1+a^(x-y))+(2)/(1+a^(y-x)))=?

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  19. (8.5xx8.5-17xx3.5+3.5xx3.5)/((8.5)^(2)-(3.5)^(2))=?

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  20. यदि a-b=3 तथा a^(3)-b^(3)=513 हो, तो (a+b)=?

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