1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
TiliK225 [7]
3 years ago
10

A seven digit phone number consists of a three-digit prefix followed

Mathematics
1 answer:
Svetlanka [38]3 years ago
4 0

10000 different phone numbers are possible for a  particular prefix if repetion of digits is allowed

5040 different phone numbers are possible for a  particular prefix if repetion of digits is not allowed

<em><u>Solution:</u></em>

Given that,

A seven digit phone number consists of a three-digit prefix followed  by four digits

We have to find the different phone numbers are possible for a  particular prefix

For a paricualr prefix, there are four digits

Total numbers from 0 to 9 are 10

Therefore,

Different ways for phone number for particular prefix:

If repetition is allowed:

Different ways = 10 x 10 x 10 x 10 = 10000 ways

If repetition is not allowed then:

Different ways = 10 x 9 x 8 x 7 = 5040 ways

You might be interested in
Volume 918 yd. what is volume in ft
vitfil [10]
<span>918yd³= 24786.00ft³

i believe that's what you were looking for?</span>
8 0
3 years ago
Question 2(Multiple Choice Worth 1 points)
kramer

Answer:

it is a linear expression

6 0
2 years ago
On Monday the price for bottled water was 5 bottles for $12.20. On Saturday the price was 3 bottles for $7.65. Which day had the
kolbaska11 [484]

Answer:

Saturday

Step-by-step explanation:

Monday had a unit rate of $2.44 per bottle

Saturday had a unit rate of $2.55 per bottle.

I wonder...

7 0
3 years ago
Solve for x in the equation:<br> x^2 - x = 20
max2010maxim [7]
X=5
cuz 5^2=25
25-5=20
8 0
2 years ago
What description represents the expression 3x+4
spayn [35]

Answer:

The sum of three times a number and 4

7 0
3 years ago
Read 2 more answers
Other questions:
  • Find all solutions to the given equation: (2x − 2)(3x +1)(x − 1) = 0
    8·1 answer
  • 17. Write a quadratic equation to find two consecutive odd natural numbers whose
    8·1 answer
  • −6.6(−4.3)<br> Find answer plz
    11·1 answer
  • Please answer correctly for brainly
    11·1 answer
  • Solve the system of equations and choose the correct ordered pair.2x + 6y = 63x – 2y = 20
    9·1 answer
  • If f(x)4^x-8 and g(x)=5x+6, find (f+g)(x)
    14·1 answer
  • WHOEVER CAN SOLVE THIS IS A CRAZY GENIUS!!
    15·1 answer
  • Mr. Moore drove the first half of his journey at an average speed of 96 km/h for 2 hours. He then drove the remaining half of hi
    14·1 answer
  • Solve the following:<br> -x + 4(1 + 5x) = 156<br> I need help please ?
    12·1 answer
  • Find the number whose 1/3 part exceeds its 1/4 part by 12
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!