Home
Class 10
MATHS
For the A.P. 10, 15,20,…..195, find: (...

For the A.P. 10, 15,20,…..195, find:
(i) the number of terms in the above A.P.
(ii) the sum of all its terms.

Text Solution

Verified by Experts

The correct Answer is:
(i) n=38 (ii) =3895
Promotional Banner

Topper's Solved these Questions

  • ARITHMETIC PROGRESSION

    ICSE|Exercise Exercise 10A|20 Videos

  • ARITHMETIC PROGRESSION

    ICSE|Exercise Exercise 10B|16 Videos

  • BANKING

    ICSE|Exercise Competency Based Questions|10 Videos

Similar Questions

Explore conceptually related problems

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

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

Find the number of terms of the A.P. -12 ,\ -9,\ -6,\ dot,\ 12 . If 1 is added to each term of this A.P., then find the sum of all terms of the A.P. thus obtained.

Find the sum of first 10 terms of the A.P. 4+6+8+………

The sum of 3^(rd) and 11^(th) terms of an A.P. is 34. Find the sum of its 13 terms.

(i) Find the number of terms in the A.P. 8, 12, 16, ........124 (ii) Find the number of terms in the A.P. 75, 70, 65, .....15

Find an A.P. in which the sum of any number of terms is always three times the squared number of these terms.

Determine the number of terms in the terms in the A.P. 3,7,11…407. Also, find its 20th term from the end.

If the sum of first n terms of an A.P. is 3n^2 + 2n , find its r^(th) term.

If the n^(t h) term of an A.P. is (2n+1), find the sum of first n terms of the A.P.

ICSE-ARITHMETIC PROGRESSION-Exercise 10F
  1. For the A.P. 10, 15,20,…..195, find: (i) the number of terms in the ...

    Text Solution

    |

  2. The 6th term of an AP. is 16 and the 14th term is 32. Determine the 36...

    Text Solution

    |

  3. If the third and the 9th terms of an A.P. be 4 and -8 respectively, fi...

    Text Solution

    |

  4. An A.P. consists of 50 terms of which 3rd term is 12 and the last term...

    Text Solution

    |

  5. Find the arithmetic mean of : (i) -5 and 41 (ii) 3x-2y and 3x+2y ...

    Text Solution

    |

  6. Find the sum of first 10 terms of the A.P. 4+6+8+………

    Text Solution

    |

  7. Find the sum of first 20 terms of an A.P. whose first term is 3 and th...

    Text Solution

    |

  8. How many terms of the series 18 + 15 + 12 +…………... when added together...

    Text Solution

    |

  9. The nth term of a sequence is 8 -5n. Show that the sequence is an A.P.

    Text Solution

    |

  10. Find the general term (nth term) and 23rd term of the sequence 3, 1, -...

    Text Solution

    |

  11. Which term of the sequence 3, 8, 13, is 78?

    Text Solution

    |

  12. Is -150 a term of 11, 8, 5, 2…………

    Text Solution

    |

  13. How many two digit numbers are divisible by 3?

    Text Solution

    |

  14. How many multiples of 4 lie between 10 and 250 ?

    Text Solution

    |

  15. The sum of the 4th term and the 8th term of an A.P is 24 and the sum o...

    Text Solution

    |

  16. The sum of first 14 terms of an AP is 1050 and its 14th terms 140. Fin...

    Text Solution

    |

  17. The 25th term of an A.P. exceeds its 9th term by 16. Find its common d...

    Text Solution

    |

  18. For an A.P., show that (m +n)th term + (m-n) term =2 xx m th term

    Text Solution

    |

  19. If the nth term of the A.P. 58, 60, 62, is equal to the nth term of th...

    Text Solution

    |

  20. Which term of the A.P. 105, 101, 97,………. the first negative term is

    Text Solution

    |

  21. How many three digit numbers are divisible by 7 ?

    Text Solution

    |