Home
Class 10
MATHS
1,2,3…..sum of 20 term is...

1,2,3…..sum of 20 term is

A

55

B

220

C

210

D

90

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

1,2,3, …… sum to 10 term is ………….

-1, 1/4, 3/2 ,…………. . Sum to 10 terms = ………….

1+ ((1)/(3) + (1)/(3^2) ) + (( 1)/( 3^3) + (1)/( 3^4) + (1)/( 3^5) ) + .... sum of the terms in the n^( th) bracket=

If sum of the series a- (a+d) + (a+ 2d)- (a + 3d) + ….up to 21 terms is

If S_(1), S_(2), S_(3) be the sum of 10, 20, 30 terms respectively of an A.P. Then

If the sum (3)/(1^(2)) + (5)/(1^(2) + 2^(2)) + (7)/(1^(2) + 2^(2) + 3^(2)) + …+ upto 20 terms is equal to (k)/(21) , then k is equal to

find the sum of the following A.Ps 1,1/4,3/2,32,…..to81 terms.

If the sum of m terms of an A.P, is equal to the sum of n terms of the A.P ., then the sum of (m + n) terms is

In a G.P if the first term is 3, n^(th) term is 96 and the sum of n terms is 189, then the number of terms is

The sum of the series 2^(2) + 2(4^(2)) + 3(6^(2)) + ….upto 10 terms is