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January 25, 2015

January 25, 2015

Posted by **Abbie** on Tuesday, October 20, 2009 at 9:41am.

The last part of the telephone number can start with any digit apart from zero. The other three digits can be any number. How many four digit numbers are there?

- math -
**bobpursley**, Tuesday, October 20, 2009 at 10:11am9*10*10*10

- math -
**Abbie**, Tuesday, October 20, 2009 at 12:43pmThank you, sorry to be slow but, is that 9,101,010? Can't believe it is this simple!

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