SOLUTION: How many different 4-digit numbers can be created if no digit can be repeated? Remember, a number cannot begin with 0
Algebra.Com
Question 183649: How many different 4-digit numbers can be created if no digit can be repeated? Remember, a number cannot begin with 0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How many different 4-digit numbers can be created if no digit can be repeated? Remember, a number cannot begin with 0
-------------
1st digit : 9 ways
2nd digit : 9 ways
3rd digit : 8 ways
4th digit : 7 ways
----------------------
Ans: 81 * 56 = 4536
=========================
Cheers,
Stan H.
RELATED QUESTIONS
how many different 4 digit numbers can be created if no digit can be repeated? Remember a (answered by checkley77)
How many different 4-digit numbers can be created if no digit can be repeated? Remember, (answered by stanbon)
How many two-digit numbers can formed if the first digit cannot be 0 and no digit can be... (answered by stanbon)
a four digit code is created from the digits 0 to 9. how many of these codes can be... (answered by Fombitz)
How many four-digit numerical codes can be created if no digit may be repeated?... (answered by psbhowmick)
a four digit serial number is to be created from the digits 0 through 9. How many of... (answered by amoresroy)
A 4-digit pin number is to be created using the digits 0 through 9. The first digit must (answered by ikleyn)
How many 4 digit number can be made using 0 -7 with no repeated digits... (answered by oscargut)
If each of the 10 digits is chosen at random, how many ways can you choose
the following (answered by stanbon)