Find the sum of the first 7 terms of the series. 6-12+24-48+

258

Step-by-step explanation:

Since, the sum of GP is,

where r is the common ratio,

a is the first term,

n is the number of term,

Here, series is, 6, -12, 24, -48, _ _ _ _

Which is a GP ( Because there is common ratio in the given consecutive terms )

So, for the above series,  a = 6, r =  and  n = 7,

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Thus, the sum of the 7 terms of the given series is 258.

4400

step-by-step explanation:

answer: 5

step-by-step explanation: