Home
Class 10
MATHS
Find the sum of the first 25 terms of...

Find the sum of the first 25 terms of an A.P. whose `n t h` term is given by `a_n=7-3n` .

Answer

Step by step text solution for Find the sum of the first 25 terms of an A.P. whose n t h term is given by a_n=7-3n . by MATHS experts to help you in doubts & scoring excellent marks in Class 10 exams.

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • AREAS RELATED TO CIRCLES

    RD SHARMA|Exercise All Questions|251 Videos

  • CIRCLES

    RD SHARMA|Exercise All Questions|131 Videos

Similar Questions

Explore conceptually related problems

Find the sum of the first 25 terms of an A.P. whose nth term is given by a_(n)=2-3n

Find the sum of first 25 terms of an A.P.whose nth term is 1-4n

Knowledge Check

  • Find the sum of first 31 terms of an A.P. whose nth term is (3+(2n)/(3)) .

    A
    `423(2)/(3)`
    B
    `413(1)/(3)`
    C
    `417(2)/(3)`
    D
    `419(2)/(3)`

  • If the sum of first n terms of an A.P. is 3n^(2)-2n , then its 19th term is

    A
    123
    B
    118
    C
    109
    D
    107

    • Similar Questions

    Explore conceptually related problems

    Find the sum of first n term of the A.P., whose nth term is given by (2n+1).

    Find the sum of 'n' terms of an A.P. whose nth term is 2n+1.

    Find the sum of n terms of an A.P. whose nth term is (2n+1).

    Find the sum of first 24 terms of the list of numbers whose nth term is given by a_(n)=3+2n

    Find the sum to n terms of an A.P.whose nth terms is t_(n)=5+6n,n in N

    Write the n t h term of an A.P. the sum of whose n terms is S_n .

    Home
    Profile