Home
Class 10
MATHS
If the sum of the first n terms of an A....

If the sum of the first n terms of an A.P. is `3n+n^2`, what is the first term? What is the `2^(nd)` term, `3^(rd)` term, `10^(th)` term and the `n^(th)` terms.

Promotional Banner

Topper's Solved these Questions

  • PROGRESSIONS

    BEYOND PUBLICATION|Exercise EXERCISE|259 Videos

  • PROBABILITY

    BEYOND PUBLICATION|Exercise EXERCISE|136 Videos

  • QUADRATIC EQUATIONS

    BEYOND PUBLICATION|Exercise EXAMPLE|135 Videos

Similar Questions

Explore conceptually related problems

If the sum of the first 25 terms of an A.P. is 16, 250 and First term is 50. Then find the 15^(th) term.

If the sum of the first 14 terms of an A.P is 1050 and its first term is 10 , find the 56^(th) term .

If the sum of the first 14 terms of an AP is 1050 and its first term is 10, find the 20^(th) term.

If the sum of first 15 terms of an A.P. is 675 and its first term is 10, then find 25th term.

If the sum of the first 10 terms of an A.P. is 1,200 and First term is 30. Then find the 6^(th) term.

If the sum of first 15 terms of an A.P is 675 and its first term is 10, then find 25^@ term.

If the sum of the first n terms of an AP is 4n-n^(2) , what is the first term (remember the first term is S_(1) )? What is the sum of first two terms? What is the second term? Similarly, find the 3^(rd) , the 10^(th) and the n^(th) terms.

If the mth term of an A.P is n and nth term is m , then pth term =

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

The sum of n terms of an A.P is 3n^(2) +n . Then 8^(th) term of the A.P is