What is the sum of a 6-term geometric series if the first term is 21 and the last term is 1,240,029?

2 answers:

5 0

21 times x to the fifth (where x is the ratio between values) equals 1240029
1240029/21=59049
59049^(1/5)=9
so the values are 21, 21*9, 21*9^2, 21*9^3, 21*9^4, 1240029
the sum of these values is 1395030

EleoNora [17]2 years ago

5 0

The answer is 1,395,030

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