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April 19, 2014

Posted by **Jen** on Tuesday, July 26, 2011 at 4:09pm.

Is it 9^10??

- Math -
**Ms. Sue**, Tuesday, July 26, 2011 at 4:27pm - Math -
**Jen**, Tuesday, July 26, 2011 at 4:47pmMs. Sue, wouldn't it be 9^10? I think 0 wasn't included, so it would be 10 numbers not 9.....right???

- Math -
**Ms. Sue**, Tuesday, July 26, 2011 at 5:03pmI'm not sure.

Please post this as a New Question. That way a math tutor may be able to help you.

- Math -
**PsyDAG**, Wednesday, July 27, 2011 at 10:49amFor social security numbers, 0 can be included.

n^r = 10^9, where n is the number of things to choose from, and you choose r of them (Repetition allowed, order matters)

- Math -
**Jen**, Wednesday, July 27, 2011 at 12:49pmso it would be 1,000,000,000???

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