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Find the sum of the first 10 terms in the geometric series: 1 + 3 + 9 + 27 + ...

a) 29524
b) 59048
c) 19682
d) 65536

1 Answer

4 votes

Final answer:

To find the sum of the first 10 terms in a geometric series, use the formula Sum = a * (1 - r^n) / (1 - r), where a is the first term and r is the common ratio. Plugging in the values, we find that the sum is 29524.

Step-by-step explanation:

To find the sum of the first 10 terms in a geometric series, we can use the formula:

Sum = a * (1 - r^n) / (1 - r)

In this case, a = 1 (the first term) and r = 3 (the common ratio). Plugging these values into the formula, we get:

Sum = 1 * (1 - 3^10) / (1 - 3)

Simplifying, we have:

Sum = 1 * (1 - 59049) / (1 - 3)

Sum = -59048 / -2

Sum = 29524

Therefore, the sum of the first 10 terms in the geometric series is 29524.

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