Question

Find the sum of 8 term of the G P 3,6,12,24

Answer 1

First term = 3
Common ratio = second term / first term

which equals
$\frac{6}{3} = 2$

The nth term in a GP equals,
${ar}^{n - 1}$
Where a is the first term.
and r is the common ratio

Therefore,

The 8th term here will be,

$(3 ){(2)}^{(8 - 1)} \\ = 3( {2)}^{7} \\ = 3 \times 128 \\ = 384.$

Therefore the required 8th term here is 384.

Answer 2

Answer:

1533

Step-by-step explanation:

Use formula of sum of gp