SOLUTION: Choose the answer to complete the set. 1. 5 3 9 7 21 19 ?

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Question 604672: Choose the answer to complete the set. 1. 5 3 9 7 21 19 ?
Answer by Edwin McCravy(8909) About Me  (Show Source):
You can put this solution on YOUR website!
5 3 9 7 21 19 
Start with 5

Subtract 2, get 3

Multiply by 3, get 9

Subtract 2, get 7

Multiply by 3, get 21

Subtract 2, get 19

Multiply by 3, get 57

Edwin