Home
Class 10
MATHS
Sn in A.P.=...

`S_n` in A.P.=

A

`n/2[a+l]`

B

`n/3[a+l]`

C

2n(a+l)

D

none

Text Solution

Verified by Experts

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

S_(n) in AP = ……………….

S_(n) in AP = ………….

If the coefficients of 5th, 6th, 7th terms of (1+x)^n are in A.P. then n=

If the coefficients of 2nd, 3rd, 4th terms of (1+x)^n are in A.P. then n=

If the coefficients ""^nC_4, ""^nC_5, ""^nC_6 of (1 +x)^n are in A.P. then n is equal to

If l = 205 and A.P. 7,13,19,….. . Then find the no, of terms in A.P.

If ""^(n)C_(4),""^(n)C_(5),""^(n)C_(6) are in A.P., then the value of n is

The 'n' the term of a given A.P. is 6n+2 . Then write the first four terms in it.

In an A.P., if common difference is 2, sum to n terms is 49, 7th term is 13, then n =

If l,m,n are in A.P then the liens represented by lx+my+n=0 are concurrent at the point