Question

write a formula to find geometrical series​

Answer 1

Answer:

To find the sum of a finite geometric series, use the formula, Sn=a1(1−rn)1−r,r≠1 , where n is the number of terms, a1 is the first term and r is the common ratio .

Answer 2

Answer:

sn=a1(1-rn) 1-r,r#1

Step-by-step explanation:

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