Home
Class 14
MATHS
The sum of the first 20 terms of the ...

The sum of the first 20 terms of the series `1/(5xx6)+1/(6xx7)+1/(7xx8)+\ ` is (a) 0.16 (b) 1.6 (c) 16 (d) None of these

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • COMPOUND INTEREST

    RS AGGARWAL|Exercise All Questions|89 Videos

  • HCF AND LCM OF NUMBERS

    RS AGGARWAL|Exercise All Questions|159 Videos

Similar Questions

Explore conceptually related problems

What is the sum of the first 50 terms of the series (1xx3)+(3xx5)+(5xx7)+………….?

The sum of the first 20 terms of the series 1+(3)/(2)+(7)/(4)+(15)/(8)+(31)/(16)+... is:

5, 16, 6, 16, 7, 16, 9 (a) 9 (b) 7 (c) 6 (d) None of these

(1.6xx3.2)/(0.08)=?( a) 0.8(b)6.4(c)8(d)64(d) None of these

1/(5 xx 6) + 1/(6 xx 7) + 1/(7 xx 8) + ….. + 1/(24 xx 25) ?

(3.5xx1.4)/(0.7)=?( a) 0.7(b)2.4(c)3.5(d)7.1 (e) None of these

The sum of the first 20 terms common between the series 3+7+11+15+....1+6+11+16+.... and is

RS AGGARWAL-DECIMAL AND FRACTIONS-All Questions
  1. The value of 1/4+1/(4xx5)+1/(4xx5xx6) correct to 4 decimal place...

    Text Solution

    |

  2. Find the value of the following expression upto four places of deci...

    Text Solution

    |

  3. The sum of the first 20 terms of the series 1/(5xx6)+1/(6xx7)+1/(7x...

    Text Solution

    |

  4. The last digit in the decimal representation of (1/5)^(2000) is (a)...

    Text Solution

    |

  5. Which of the following is equal to 1? ((0. 11)^2)/((1. 1)^2xx0. 1) ...

    Text Solution

    |

  6. The expression 3/4+5/(36)+7/(144)+\ +(17)/(5184)+(19)/(8100) is eq...

    Text Solution

    |

  7. If 1. 5 x=0. 04 y , then the value of ((y-x)/(y+x)) isi (730)/(77) ...

    Text Solution

    |

  8. The value of [35. 7-(3+1/(3+1/3))-(2+1/(2+1/2))] is (a) 30 (b) 34.8...

    Text Solution

    |

  9. ((0. 1667)(0. 8333)(0. 3333))/((0. 2222)(0. 6667)(0. 1250)) is appr...

    Text Solution

    |

  10. (3. 5xx1. 4)/(0. 7)=? (a) 0.7 (b) 2.4 (c) 3.5 (d) 7.1 (e) None of ...

    Text Solution

    |

  11. (1. 6xx3. 2)/(0. 08)=? (a) 0.8 (b) 6.4 (c) 8 (d) 64 (d) None of...

    Text Solution

    |

  12. (4. 41xx0. 16)/(2. 1xx1. 6xx0. 21) is simplified to (a) 1 (b) 0.1 (...

    Text Solution

    |

  13. (. 625xx. 0729xx28. 9)/(. 0081xx. 025xx1. 7)=? (a) 382.5 (b) 3625 ...

    Text Solution

    |

  14. The value of (3. 6xx0. 48xx2. 50)/(0. 12xx0. 09xx0. 5) is (a) 80 (b...

    Text Solution

    |

  15. (0. 0203xx2. 92)/(0. 0073xx14. 5xx0. 7)=? (a) 0.8 (b) 1.45 (c) 2.4...

    Text Solution

    |

  16. The value of (3. 157xx4126xx3. 198)/(63. 972xx2835. 121) is closest...

    Text Solution

    |

  17. The value of (489. 1375xx0. 0483xx1. 956)/(0. 0873xx92. 581xx99. 74...

    Text Solution

    |

  18. The value of (241. 6xx0. 3814xx6. 842)/(0. 4618xx38. 25xx73. 65) is...

    Text Solution

    |

  19. (0. 2xx0. 2+0. 01)(0. 1xx0. 1+0. 02)^(-1) is equal to 5/3 (b) 9/5 (c) ...

    Text Solution

    |

  20. (5xx1. 6-2xx1. 4)/(1. 3)=? (a) 0.4 (b) 1.2 (c) 1.4 (d) 4

    Text Solution

    |