Saturday

October 25, 2014

October 25, 2014

Posted by **Sebastian** on Monday, March 26, 2012 at 3:49pm.

1,364

1,024

256

A telephone dial has holes numbered from 0 to 9 inclusive, and eight of these holes are also lettered. How many different telephone numbers are possible with this dial, if each "number" consists of two letters followed by five numbers, where the first number is not zero?

200,000

5,760,000

6,400,000

- Math. Explain -
**bobpursley**, Monday, March 26, 2012 at 4:52pmless than 100,000? highest number can be

44,444 Since three are four possible digits in each of those positions, then

you can have 4^5 choices. 4^5=1024

so ten holes.

two letters, including "O"

26*26*9*10^4

**Answer this Question**

**Related Questions**

math - *The number has 8 digits, none of the digits are the same. *It is evenly ...

math - The number uses every number 0-9 the numbers are used only once the ...

math - The number has 8 digits none of the digits are the same 2. It is enemy ...

5th grade math - i am a number greater than 40,000 and less than 60,000 my ones ...

Math - It is a 5 digit no. ,palindrome,divisible by 4,10 digit is cube root of 1...

math - What mystery number has 8 digits; none of the digits are the same. It is ...

Math - Write a number that has a hundreds digit less than 7, a tens digit less ...

Math - How do you write a number that has a hundreds digit less than 7 , a tens ...

math - i have a six digit question my 100 thousands is one less than my ones ...

4th grade math - I'm a 4 digit number with no 2 digits the same. My ones digit ...