Home
Class 10
MATHS
In a series an= (n(n+1))/2, a2 = ..........

In a series `a_n= (n(n+1))/2, a_2` = .......

A

41

B

3

C

4

D

2

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • PROGRESSIONS

    VGS PUBLICATION-BRILLIANT|Exercise Creative Bits for CCE Model Examination|129 Videos

  • PROBABILITY (MULTIPLE CHOICE QUESTION)

    VGS PUBLICATION-BRILLIANT|Exercise PROBABILITY (MULTIPLE CHOICE QUESTION)|20 Videos

  • PROGRESSIONS (MULTIPLE CHOICE QUESTION)

    VGS PUBLICATION-BRILLIANT|Exercise PROGRESSIONS (MULTIPLE CHOICE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

If a_n=(n(n+1))/2 a_4 =…..

In a series a_(n) = (n(n+1))/(3), a_(2) = ………….

a_n= 1/(n+2), a_3 = ...........

a_n = 2^n, a_5 = ........

a_n=(n-1)(n-2) then a_5 =….

1 + (x)/( a_1) + ( x( x+a_1) )/( a_1 a_2 ) + .... + ( x ( x+a_1) (x+ a_2)... ( x+a_(n-1) ) )/( a_1 a_2 ..... a_n)=

Let the sequence a_n be defined as follows: a_1 = 1, a_n = a_(n - 1) + 2 for n ge 2 . Find first five terms and write corresponding series

Find the indicated terms in each of the sequences whose n^("th") terms are: a_n=(n(n-2))/(n+3),a_(20)

The series (n-1),(n-2),(n-3),…. Is a type of

The A.M. of the series .^(n)C_(0), .^(n)C_(1), .^(n)C_(2),….,.^(n)C_(n) is