SOLUTION: Find the sum of the rest 20 terms of the following series: 4 + 12 + 36 + 108...
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Question 361815
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Find the sum of the rest 20 terms of the following series: 4 + 12 + 36 + 108...
Answer by
robertb(5830)
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4+12+36+108+... = 4(1+3+9+27 +...)
=
=
.