SOLUTION: Find the sum of the first 6 terms of the following series, to the nearest integer. 13, 26, 52

Question 935668: Find the sum of the first 6 terms of the following series, to the nearest integer.
13, 26, 52
Found 2 solutions by 2897696, josgarithmetic:
Answer by 2897696(96) (Show Source): You can put this solution on YOUR website!
need to find 3 more terms, you are already given 3 terms of the 6
the pattern is to multiply by 2: 13*2=26*2=52*2=104*2=208*2=416*2=832
13,26,52,104,208,416
add theses numbers together and you get : 819
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Multiples of 13. Sequence may be .

Without using any advanced summation formulas,

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