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How many terms of the geometric sequence 4,12,36 is added if the sum is 4,372

4 years ago

Answered By Hamid Z

so plugin the a=4372,r=12/4=3 and  n will be 7


4 years ago

Answered By Hamid Z

solve this equation for n , s=a(1-rn)/1-r


4 years ago

Answered By Hamid Z

1-rn