# MATH

The last part of a telephone number has four digits, e.g.
7814 1487 2103 2772
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?

1. 👍 0
2. 👎 0
3. 👁 79
1. 10x10x10x9=?

1. 👍 0
2. 👎 0
posted by Jen

## Similar Questions

1. ### math

The last part of a telephone number has four digits, e.g. 7814 1487 2103 2772 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

asked by Abbie on October 20, 2009
2. ### Data Mangement- Math

Paula moves to an area with a different telephone exchange. Telephone numbers in the new exchange start with 753, and all combinations of the four remaining digits are equally likely. a) Calculate the probability that the last

asked by Maame on April 21, 2013
3. ### math,correction, bobpursly

Since when is 5^7 =8125? if a number is a multple of ten, that means the last digit is zero. The leading digit cannot be zero. 9*10^5*1 on c, again, the leading digit cannot be zero. d is right e. no leading zero is allowed.

asked by bobpursley on July 6, 2007
4. ### Maths

The Sentosa High School's telephone number is an eight digit number. The sum of the two numbers formed from the first three digits and the last five digits respectively 66558. The sum of two numbers formed from the first five

asked by Surya on February 23, 2012
5. ### math,correction

can someone correct this for me parts A-E and if i am wrong can you help me....please How many 7-digit telephone numbers are possible if the first digit cannot be zero and..... a) only odd digits may be used? my answer: 8125 b)

asked by student on July 6, 2007

Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixth digits.

asked by Anonymous on June 30, 2013
7. ### math

Posted by nicole on Monday, September 22, 2008 at 4:32pm in response to math. Can u please help me with this..this is my sons 6th grade work and im pulling my hair out..i would like to know how to do it so he does not think or his

asked by nicole on September 22, 2008
8. ### math

Posted by nicole on Monday, September 22, 2008 at 4:32pm in response to math. Can u please help me with this..this is my sons 6th grade work and im pulling my hair out..i would like to know how to do it so he does not think or his

asked by nicole on September 22, 2008
9. ### probability

In the state of Georgia, telephone numbers consists of 10 digits, including the area code. One of these area codes is 770. The first digit following the area code cannot be 1 or 0. Find the number of possibilities for telephone

asked by Anonymous on July 22, 2016
10. ### math

Can u please help me with this..this is my sons 6th grade work and im pulling my hair out..i would like to know how to do it so he does not think or his teacher that im an idiot... Thank You So Much -The mystery # is a decimal..

asked by nikol on September 22, 2008

More Similar Questions