Answers

2014-08-30T10:19:22+08:00
5, 10, 20, 40,...
The next term of the sequence is 80.
The pattern is multiplying by two in the previous term.

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2014-08-31T09:40:09+08:00
5,10,20,40

you can see that every next number, the previous one doubles 
so multiply 40 by 2 and the pattern will be

5, 10, 20, 40, 80
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