Question 1086937: Find the sum of this series: 3 + 6 + 12 + 24 + 48 + …; 10th term.
a. 6742
b. 2455
c. 3069 Found 2 solutions by MathLover1, MathTherapy:Answer by MathLover1(20850) (Show Source):
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3 + 6 + 12 + 24 + 48 + …..; 10th term.
rule: where =,,...
now find next terms up to
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add all:
your answer is:
c.
Sum of a GP, or , with: = Sum of "n" terms (Unknown, in this case) = 1st term (3, in this case) = Common ratio (2, in this case) = Number of terms (10, in this case)
then becomes: , and then:
