Posted by **Geo** on Tuesday, July 31, 2012 at 4:47pm.

input 2,4 and 10 output 5,9 and 21 I do not get it at all please help me.

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**Ms. Sue**, Tuesday, July 31, 2012 at 4:50pm
Input + 2n + 1 = Output

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**Geo**, Tuesday, July 31, 2012 at 4:57pm
Sorry again but what does 2n mean. Thank you.

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**Ms. Sue**, Tuesday, July 31, 2012 at 5:01pm
2n = 2 times n

(2 * 2) + 1 = 5

(4 * 2) + 1 = 9

(10 * 2) + 1 = 21

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**Damon**, Tuesday, July 31, 2012 at 5:06pm
output = 2 n + 1

if n = 2,

output = 2*2 + 1 = 5

if n = 10

output = 2*10 + 1 = 21

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**Geo**, Tuesday, July 31, 2012 at 5:26pm
Thank you Ms.Sue and Damon you guys really have helped me a lot.

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