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Find the sum of 1/9+1/6+1/12+1/20+1/30...

Find the sum of
`1/9+1/6+1/12+1/20+1/30+1/42+1/56+1/72`

A

`1/2`

B

0

C

`1/9`

D

`1/2520`

Text Solution

Verified by Experts

The correct Answer is:
b
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MOTHERS-NUMBER SYSTEM-O
  1. If 1^2+2^2+3^2+.....+x^2=((x)(x+1)(2x+1))/6, then the value of 1^2+3^2...

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  2. The value 5/(2^2. 3^2)+7/(3^2 .4^2)+9/(4^2. 5^2)+11/(5^2. 6^2)+13/(6^2...

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  3. Find the sum of 1/9+1/6+1/12+1/20+1/30+1/42+1/56+1/72

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  4. 1/3+1/15+1/35+1/63+1/99+1/143=?

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  5. Find the sum of first five terms in the sequence 1/(1xx4)+1/(4xx7)+1...

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  6. The value of (1+(1)/(2)) (1+(1)/(3))(1+(1)/(4))....(1+(1)/(120)) is

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  7. The value of (5.42x5.42+5.42xx24)/(32.71xx32.71-27.29xx27.29)div(6.54x...

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  8. The value of [(1xx3xx9+2xx6xx18+3xx9xx27+.....)/(1xx5xx25+2xx10xx50+3x...

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  9. The simplification of (1.bar3xx1.bar3xx1.bar3-1)/(1.bar3xx1.bar3+1.bar...

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  10. 156.25 div 25 div 5 = ?

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  11. 2100 div? div 84 = 1

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  12. ((1.2.4+2.4.8+3.6.12+.....)/(1.3.9+2.6.18+3.9.27+.....))^(1//3)=?

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  13. 1+1/10+2/(10^2)+2/(10^3)+2/(10^4)+....?

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  14. Find tHe correct value upto 5 places of decimal of 1-1/20+1/(20^2)-1/(...

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  15. If 47.2506 = 4A + 7/B+2C+5/D+6E then value of 5A + 3B + 6C + D + 3E is

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  16. (1-1/(2^2))(1-1/(3^2))......(1-1/(9^2))(1-1/(10^2))=?

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  17. (1(1)/2+11(1)/2+111(1)/2+1111(1)/2) is equal to

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  18. The value of (0.333 ...... xx 0.444 .... ) is

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  19. 1/20+1/30+1/42+1/56+1/72+1/90+1/110+1/132=?

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  20. Find the square root of ((0.064-0.008)(0.16-0.04))/((0.16+0.08+0.04)(0...

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