Home
Class 14
MATHS
The sum of all the terms of the A.P.7,10...

The sum of all the terms of the A.P.7,10,13,... `l` is 1242. where `l` is the last term of the A.P. Find the value of `l`.

A

67

B

79

C

85

D

102

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RATIO, PROPORTION & VARIATION

    QUANTUM CAT|Exercise QUESTION BANK|238 Videos

  • SET THEORY

    QUANTUM CAT|Exercise QUESTION BANK|81 Videos

Similar Questions

Explore conceptually related problems

Is 68 as term of the A.P.7,10,13,?

Is 68 a term of the A.P.7,10,13, ?

Find the sum of 20 terms of the A.P.1,4,7,10..

Find the sum to n term of the A.P.1,3,5,7.....

Find: 10 th term of the A.P.1,4,7,10..

Find 10 th term of the A.P.1,4,7,10

If the sum of a certain number of terms of the A.P.25,22,19... is 116. Find the last term.

Find the 18th terms of the A.P. 7, 13,19, 25

Find the 19th term of the A.P. 7,13,19,25,….

Find the middle term of the A.P. 7, 13, 19, … 247.

QUANTUM CAT-SEQUENCE, SERIES & PROGRESSIONS-QUESTION BANK
  1. How many terms of the series 20 + 16 + 12 amounts to 48?

    Text Solution

    |

  2. p,q,r,s,t are first five terms of an A.P. such that P + r + t = -12 an...

    Text Solution

    |

  3. The sum of all the terms of the A.P.7,10,13,... l is 1242. where l is...

    Text Solution

    |

  4. Find the sum of all the integers between 55 and 555 which are divisibl...

    Text Solution

    |

  5. How many terms are there in the A.P. whose first and fifth terms are ...

    Text Solution

    |

  6. The first and last terms of an A.P. are - 7 and 233 and the sum of the...

    Text Solution

    |

  7. The sum of three numbers in AP is 12 and sum of their cubes is 408 fin...

    Text Solution

    |

  8. The sum of first 30 even natural numbers is

    Text Solution

    |

  9. If you save 1 paisa today, 2 paise the next day, 3 paise the succedin...

    Text Solution

    |

  10. The ratio of the 7th to the 3rd terms of an A.P. is 12:5, find the rat...

    Text Solution

    |

  11. Find the sum of the first hundred even natural numbers divisible by 5:

    Text Solution

    |

  12. If m times the mth term of an A.P. is equal to n times its nth term, f...

    Text Solution

    |

  13. The sum of the first fifteen terms of an A.P. is 105 and the sum of th...

    Text Solution

    |

  14. If the first term of an AP is 2 and the sum of the first five terms i...

    Text Solution

    |

  15. The sum of the first six terms of an A.P. is 42. The ratio of the 10th...

    Text Solution

    |

  16. (i) The sum of n terms of two arithmetic series are in the ratio of (7...

    Text Solution

    |

  17. The sum of three numbers in AP is 15 and sum of their squares is 93 fi...

    Text Solution

    |

  18. If the nth term of an A.P. is 4n-1 , find the 30th term and the sum of...

    Text Solution

    |

  19. The sum of n terms of a series is 3n^2+5n find the value of n if nth ...

    Text Solution

    |

  20. Find the number of terms of the A.P. 98,91,84,…must be taken to give a...

    Text Solution

    |