Saturday

December 20, 2014

December 20, 2014

Posted by **slomomo** on Monday, March 18, 2013 at 1:26pm.

- College Mathematics -
**Reiny**, Monday, March 18, 2013 at 1:51pmIf the lead digit can be a zero

then 10^9

If the lead digit cannot be a zero

then 9(10^8)

- College Mathematics -
**Reiny**, Monday, March 18, 2013 at 1:52pmIf the lead digit can be a zero

then 10^9

If the lead digit cannot be a zero

then 9(10^8)

**Answer this Question**

**Related Questions**

College Mathematics - Counting principles and permutations. A social security ...

Math-New Questions - Social Security Numbers A social security number consists ...

Math - Social Security Numbers A social security number consists of nine digits...

Math - A social security number consists of nine digits. How many different ...

math - A typical Social Security number is 555-47-5593. How many Social Security...

math - a social security number contains nine digits such as 074-66-7795. how ...

Math - 1.) A security code has seven characters. Each code begins with two ...

data management - from the digits 0,1,2,3,4,5,6,7,8,9 find the number of a) 4-...

Data management - from the digits 0,1,2,3,4,5,6,7,8,9 find the number of a) 4-...

math - your social security number is a 9 digit number. suppose that the last 4 ...