Answer:
The sum of 10 terms is S₁₀ = -1023
Explanation:
Explanation:-
Given series
3 + (-6) + 12 + (-24) + ⋯
This is geometric sequence 3 , -6 ,12 , -24 ,....
a = 3 and common ratio
Given ratio r = -2 < 1
Sum of 'n' terms of a G.P

Sum of '10' terms of a G.P


Conclusion:-
Sum of '10' terms of a G.P = - 1023
Verification:-
The series of first 10 terms
3+(-6)+12+(-24)+48+(-96)+192+(-384)+768+(-1536) = -1023