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**simron****Real Member**- Registered: 2006-10-07
- Posts: 237

1. Say the license plates in Mathopolis consist of 2 letters followed by 3 digits. Assuming that none of the digits or letters can be the same, how many possible license plates are there?

*Last edited by simron (2009-04-05 03:35:34)*

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**simron****Real Member**- Registered: 2006-10-07
- Posts: 237

(Note that because I am turning these into Mathopolis questions, I will be posting these one by one.)

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**smiyc86****Member**- Registered: 2009-03-19
- Posts: 78

26c2 * 10c3 * 5!

I love Maths and Music ... dunno which more

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**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,552

or maybe 26 x 25 x 10 x 9 x 8 for license plate #1 problem.

**igloo** **myrtilles** **fourmis**

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**smiyc86****Member**- Registered: 2009-03-19
- Posts: 78

well i think franklin is correct ... i didn't notice the "followed by" constraint ...

I love Maths and Music ... dunno which more

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**simron****Real Member**- Registered: 2006-10-07
- Posts: 237

I got

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

I get John's answer too. There are 10 digits to choose from.

Why did the vector cross the road?

It wanted to be normal.

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