Question

Can anybody tell me the formula for calculating the Sum of the following series :
1,1,2,1,1,2,2,1,1,2,2,2,1,1,2,2,2,2,1,1,2,2,2,2,2,1,2,2,2,2,2,2,1,2,2,2,2,2,2,2,1,1,2,2,2,2,2,2,2,2,1.............................upto n number of terms?If any answered this I will mark him/her the brainliest.

Answer 1

Sum of nth term:
AP
Sn = n/2(2a+(n-1)d)
GP
Sn = a(1-r^n)/1-r    (r<1)
Sn = a(r^n-1)/r-1    (r>1)

Answer 2

Answer:

Step-by-step explanation: