Question

if the sum of n terms of an arithmetic progression 6nsqure+6n , then the fourth term of the series​

Answer 1

Answer:

48

Step-by-step explanation:

sum of n terms is given by :

Tn = 6n² + 6n

Now,

S3 = 6×3² + 6×3 = 54+18 = 72

S4 = 6×4² + 6×4 = 96+24 = 120

So fourth term will be :

(Sum of 4 terms - sum of 3 terms)

= 120 - 72 = 48

Answered by GauthMath.