Home
Class 11
MATHS
How many terms of the progression 54 + 5...

How many terms of the progression 54 + 51 + 48 +... has the sum 513 ? Explain the double answer.

Text Solution

Verified by Experts

The correct Answer is:
18 or 19 terms
N/a
Promotional Banner

Topper's Solved these Questions

  • SEQUENCE AND SERIES

    NAGEEN PRAKASHAN|Exercise Exercise 9D|11 Videos

  • SEQUENCE AND SERIES

    NAGEEN PRAKASHAN|Exercise Exercise 9E|12 Videos

  • SEQUENCE AND SERIES

    NAGEEN PRAKASHAN|Exercise Exercise 9B|17 Videos

  • RELATIONS AND FUNCTIONS

    NAGEEN PRAKASHAN|Exercise MISCELLANEOUS EXERCISE|12 Videos

  • SETS

    NAGEEN PRAKASHAN|Exercise MISC Exercise|16 Videos

Similar Questions

Explore conceptually related problems

How many terms of the A.P. 54, 51, 48, ... has the sum 513 ? Explain the double answer.

How many terms of the series 54,51,48,. be taken so that their sum is 513? Explain the double answer

How many terms of the series 15+12+9+... must be taken to make 15? Explain the double answer.

How many term of the A.P. 15 , 12, 9 ., - are needed to give the sum 15 ? Explain the duble answer .

How many terms of the series 54 + 51 + 48 + … must be taken to make 513 ? Explain ? Explain the -double anwer.

How many terms of the AP 18,16,14,12 ,….. Are needed to given the sum 78 ? Explain the double answer.

How many terms of the AP 17,15,13,11,... must be added to get thesum 72? Explain the double answer.

How many terms of the series 15+11+7...... has the sum 35?

How many terms of the A.P. 17+15+13+… has the sum 72? Explain the double answer.

How many terms of the arithmetic progression 45, 39, 33,….. Must be taken so that their sum is 180? Explain the double answer.

NAGEEN PRAKASHAN-SEQUENCE AND SERIES-Exercise 9C
  1. The sum of 5 and 15 terms of an A.P. are equal. Find the sum of 20 ter...

    Text Solution

    |

  2. The sum of 20 and 28 terms of an A.P. are equal. Find the sum of 48 te...

    Text Solution

    |

  3. The pth and qth terms of an A.P. are(1)/(4)and(1)/(p) respectively. Pr...

    Text Solution

    |

  4. The sum of 15 terms of A.P. is zero. Its 4th term is 12. Find its 14th...

    Text Solution

    |

  5. The common difference, last term and sum of terms of an A.P. are 4, 31...

    Text Solution

    |

  6. The sum of m and n terms of an A.P. are n and m respectively. Prove t...

    Text Solution

    |

  7. In an A.P., if T(1) +T(5)+ T(10) +T(15)+ T(20) + T(24) = 225, find the...

    Text Solution

    |

  8. The nth term of an A.P. is (5n-1). Find the sum of its 'n' terms.

    Text Solution

    |

  9. The sum of 8 terms of an A.P. is -64 and sum of 17 terms is 289. Find ...

    Text Solution

    |

  10. The ratio of sums ofn terms of two A.P'.s is (2n + 1) : (2n - 1). Prov...

    Text Solution

    |

  11. The ratio of sums of n terms of two A.P'. is (7n + 1) : (4n + 27). Fin...

    Text Solution

    |

  12. The ratio of the sums of m terms and n terms of an A.P. is m^(2) : n^(...

    Text Solution

    |

  13. How many terms of the progression 54 + 51 + 48 +... has the sum 513 ? ...

    Text Solution

    |

  14. The pth and qth terms of an A.P. are x and y respectively. Prove that ...

    Text Solution

    |

  15. Show that the sum of an A.P. whose first term is a, the second term is...

    Text Solution

    |

  16. If the first term of an A.P. is 100 and sum of its first 6 terms is 5 ...

    Text Solution

    |

  17. The first term, last term and common difference of an A.P are respecti...

    Text Solution

    |

  18. Write the sum of first n even natural numbers.

    Text Solution

    |

  19. If Sn denotes the sum of n terms of an A.P. whose common difference is...

    Text Solution

    |

  20. The sums of n terms of three arithmetical progressions are S1, S2a n d...

    Text Solution

    |