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4 digit

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4 digits to unlock a padlock 2020-08-28
Sophie pose la question :
I have forgotten the order in what the numbers go for my padlock! The numbers are, 0125, they don't have any repeats like, 0001, 0002. What are all possible the combinations? Help!
Penny Nom lui répond.
Some strings of 4 digits 2020-06-26
Judy pose la question :
I wrote previously and need more help. I need to generate a list of 4 digit. Numbers using 0-9 with no repetitions
I know that there is a 6 followed by a 2. Order does matter
Thank you in advance for your help.

Penny Nom lui répond.
Four digit numbers starting with 6 2020-04-22
Judy pose la question :
I need to generate a list of 4 digit numbers using 0-9 where the first digit is 6 and no numbers can be repeated
Penny Nom lui répond.
What is the smallest 4 digit number? 2020-01-10
Ullas pose la question :
What is the smallest 4 digit number?
Penny Nom lui répond.
4 digit codes 2019-02-27
Sophia pose la question :
How many 4 digit codes can you get out of a numbered key pad ?
Penny Nom lui répond.
4 digit "combinations" 2018-05-18
Marvin pose la question :
I am designing a game, and I need away of figuring this out without having to write numerically all these numbers

4 digit combinations 0 through 13 non-repeating

Penny Nom lui répond.
What is small four-digit whole number? 2018-04-15
Rajesh pose la question :
What is small four-digit whole number?
Penny Nom lui répond.
A four digit pass code 2018-02-26
Jessica pose la question :
I was trying to fond out how many combinations could there be for a four digit pass code to a phone when no numbers are repeated?
Penny Nom lui répond.
A 4 digit safe combination 2017-07-29
Donna pose la question :
I lost my safe combination :( it is 4 digit # with the last digit being 2. I do not think the 1st digit is 1, 2 or 3
Can u help? Thank u :)

Penny Nom lui répond.
Some 4 digit numbers 2017-07-24
Camille pose la question :
I need all of the 4 digit combinations that starts with number 3 and digits can't be repeated
Penny Nom lui répond.
The smallest and largest 4 digit integers 2017-06-13
Avneetpal pose la question :
Difference of the smallest and biggest 4-digit number
Penny Nom lui répond.
4 digit codes with repeating digits 2017-06-01
Morgan pose la question :
what are all possible 4 digit code repeating numbers? cuz i know that you have one website on it but, it doesn't repeat 2 numbers in a code.
Harley lui répond.
Four digit numbers 2016-09-08
ning pose la question :
0000-9999 there is ten thousand 4-digit numbers. How to find the number of ways that 4 digit are the same? How to prove it by using formula?
Penny Nom lui répond.
A six digit code 2016-05-06
Ralph pose la question :
How many combinations are possible if a "safe" has four buttons and you can use a six digit code? (these are just single press buttons..)For example, this could be one possible combination: Button 4 Button 1 Button 1 Button 3 Button 2 Button 4. Thanks!
Penny Nom lui répond.
A 4 digit number 2014-04-04
LIM pose la question :
"A" is a 4 digit number formed by all the numbers from 1 to 4. When "A" is divided by 9, the remainder is the biggest possible value. What is the biggest value of A?
Chris Fisher lui répond.
Four digit phone numbers 2014-02-25
Tom pose la question :
Hi, I'm an online math teacher, working on lessons for my students.

This question is in their book and I can't do it...! Help!

It has to do with phone numbers, and in this problem, we are only dealing with the last 4 digits of the number.

It asks how many possible numbers we have if at least one digit repeats in the last 4 digits of the number.

Penny Nom lui répond.
A 4 digit number 2013-12-20
swathi pose la question :
How many 4 digit numbers can be formed using the digit 3 only once but the digit 3 must be used in all numbers?
Penny Nom lui répond.
A 4 digit code 2013-03-26
chris pose la question :
I saw a previous question about a 4 digit code type thing and I was wondering if you could email me that same type of thing. I changed the pin number on my phone's lock screen and I tried hard to remember it, then I had to go help my mom with something and I automatically forgot it and there is no way for me to get back on my phone. I need all of the possible 4 digit number combinations without the numbers 0, 1, or 2. It cannot be repeating, ascending, or descending.
I know you may not want to do all of them, but I really need it.

Robert Dawson lui répond.
A 4 digit phone lock using the digits 4, 2, 3 and 0 2012-12-24
Ragu pose la question :
I would like to know formula for searching a combination of 4 digit. eg.

I knew my Phone Lock combination is my car plate number 4230. But this time, i used another way around instead of 4230.

But I am sure, there is only this 4 digits only. 4 & 2 & 3 & 0

Penny Nom lui répond.
Some 4 digit numbers 2012-10-25
samira pose la question :
How many 4-digit numbers are there in which the first and last digits are the same?
Penny Nom lui répond.
4 digit combinations 2012-10-17
Scott pose la question :
How many different 4- number combinations from 0-1-2-3-4-5-6-7-8-9 with 2 out of the 4 odd and 2 out of the 4 even, with no numbers repeating. Thanks
p lui répond.
A four digit number 2012-10-09
cyndi pose la question :
find this 4 digit number: the tens digit is 1/3 of the hundreds digit; the 2 digit number formed by the tens and ones digits i the largest prime number smaller than 40; the sum of all 4 digits is the same as the number of face on an icosahedron ? what is the number?
Penny Nom lui répond.
4-digit positive numbers 2010-02-15
marjon pose la question :
Find the sum of all the 4-digit positive numbers with no zero digit.
Penny Nom lui répond.
A 4-digit phone code 2010-01-21
pat pose la question :
my daughter can`t remember her 4-digit code to unlock her phone. she is pretty sure it starts with a 4. can you help us? my brain is locked up
Robert Dawson lui répond.
Four digit numbers with no repeats 2010-01-02
Daniel pose la question :
I want to know how many different numbers there would be between the numbers 0000-9999 that do not have any numbers that duplicate or repeat in the number? For example the first number would have to be 0123 and the last would be 9876 (I think) Thanks!
Penny Nom lui répond.
A 4 digit number 2009-12-15
Lisa pose la question :
Billy Club was assigned the task of putting numbers on all the playground balls used during daily recess. Billy will number the balls using the following rules:

1. It will be a 4-digit number.

2. The digit in the thousands place will be a 1 or a 2.

3. The digit in the hundreds place will be a 2, 4, or 6.

4. The digit in the tens place will be an odd number.

5. The digit in the ones place will be greater than six.

How many balls can Billy number if he follows these rules?

Robert Dawson lui répond.
The smallest 4 digit number 2009-06-17
Kat pose la question :
What is the smallest 4 digit number? 0001 or 1000
Robert Dawson lui répond.
Combinations and permutations 2009-05-07
Renee pose la question :
We are trying to figure out the equation or how to solve the problem of how many combinations of 4 digits you can get out of 0-9 without repeating the numbers in a set (i.e., no 0001, 0002) begining with 0123, 0124, 0125 etc Thanks!
Stephen La Rocque lui répond.
Four-digit combinations 2009-04-18
Carri pose la question :
How many 4-digit combinations can be made out of digits 1, 2, 3, 4, & 5 using each number once? What are the combinations?
Penny Nom lui répond.
Four-digit numbers 2009-04-11
jp pose la question :
How many four-digit numbers are there?
Penny Nom lui répond.
Choosing a 4 digit number at random 2009-03-24
shabkhal pose la question :
If a four-digit number is chosen at random, what is the probability that the product of the digits is 12.
Harley Weston lui répond.
4 digit numbers from 1159 2009-03-10
David pose la question :
I have the digits "1159" and need to come up with a complete list of possible four-digit combinations. It does NOT matter the order of the two number ones (1), so this will help eliminate many possibilities.

Separately, it would also help to actually know the actual number of combinations with which I am dealing to start.

David :)

Penny Nom lui répond.
Four digit numbers 2009-03-10
Theresa pose la question :
I need to know the number of 4 digit numbers that can be formed using 1-2-3-4 without repeating numbers
Penny Nom lui répond.
4 digit strings starting with 7 2009-03-03
Angel pose la question :
I need to no all the 4 digit combinations starting with 7 and with no repititions.
Penny Nom lui répond.
Four digit numbers using 1, 0, 2 and 8 2009-01-27
Mike pose la question :
How many combinations of this four digit number 1028 can this produce only using those numbers. Example would be 0000, 0001,0002,0008,0010,0011,0012,0018,etc...
Penny Nom lui répond.
A four digit passcode 2009-01-12
john pose la question :
i have a machine at home that has a four digit passcode and the numbers range from 1 to 4 how can i get all the ways those numbers can be used
Harley Weston lui répond.
A 4 digit number 2008-11-06
Chris pose la question :
numbers 0 - 9 form a 4 digit number with no repetition.

It would round to 3000 if rounded to the nearest thousand

The digit in the tens place is twice the value of the digit in the thousands place.

It is an odd number.

It contains the largest digit.

It contains one digit less than 2.

The digit in the hundreds place is odd.

Can you find the 2 numbers?

Penny Nom lui répond.
4 digit combinations 2008-11-05
Laura pose la question :
I need to know all the number combinations possible with a 4 digit combination with double zero in the middle???
Penny Nom lui répond.
Four digit combinations 2008-06-23
star pose la question :
Can you you give me a list of all 4 digit combination starting with the number 7, for example 7123,7213.
Penny Nom lui répond.
A 4 digit passcode 2008-02-16
Rob pose la question :
If there is a 4 digit passcode with only 6 punch in symbols, how many possibilities are there and what are they? symbols are: Y, X, RB, RT, LB, LT. Please get back to me, thanks for your time and help.
Stephen La Rocque lui répond.
I am a 4-digit number 2008-02-12
Nickie pose la question :
I am a 4-digit number with no repeating digits. I am divisible by 5, my first two digits (left to right) make a number divisible by 3, and my first three digits make a number divisible by 4. Also, my digits have a sum of 19 and I have the digit 7 in the thousands place. Who am I?
Penny Nom lui répond.
Some four digit combinations 2007-10-25
Larisa pose la question :
Please tell me the answer or how to get the answer of every possible digit combination of 5173, for instance1735, 1753, 1573, 1537, 1357, 1375, etc.
Stephen La Rocque lui répond.
Four digit odd numbers 2007-09-26
sonia pose la question :
how many 4 digit odd numbers can be made using the digits 2, 5, 7, and 8
Penny Nom lui répond.
The largest 4-digit odd number 2007-09-21
Courtney pose la question :
what is the largest 4-digit odd number you can make with 1 - 9. You can not repeat digits within a number
Harley Weston lui répond.
Four digit combinations 2007-09-04
Natalie pose la question :
Using The Numbers 7 4 5

How many different 4-digit combinations are possible, you can use any of the numbers twice.

Penny Nom lui répond.
The digital lock for a cell phone 2007-08-29
Hollie pose la question :
i have a four digit lock code on my cell phone and cannot remember what it is. i know that it does not contain a 2 or a 4 and none of the numbers are repeated. the numbers range from 0 to nine and the only way to figure out what the code is, is to try randomly. I was wondering if you could give me a list of possible combinations using the information i gave you to make it easier to crack the code.
Penny Nom lui répond.
4 digit number combinations that start with the digit 2 2007-08-05
tonnie pose la question :
my question is what are all the 4 digit number combinations that start with the number 2?
Harley Weston lui répond.
Four digit numbers 2007-07-30
Spence pose la question :
My son has a problem that he has been unable to figure out. I was asked to try, but I am confused on how to get the last two parts. Any help would be great.
Thanks
Spence

How many four-digit numbers can be formed under each condition?

A) The leading digit cannot be zero: 9(10)(10)(10)=9000

B) The leading digit cannot be zero and no repetition of digits allowed: 9(9)(8)(7)=4536

C) The leading difit cannot be zero and the number must be less than 5000: ??

D) The leading digit cannot be zero and the number must be even: ??

Penny Nom lui répond.
Four digit palindromes 2003-05-05
Heather pose la question :
How many palindromes were in between the numbers 1000 and 9999?
Penny Nom lui répond.
4 x abcd = dcba 2002-11-20
A student pose la question :
Say you have a four digit number (e.g. abcd) and you multiply the number by 4. The answer you get will be the reverse order of the number you started with (dcba). What is the number? The four digits (a,b,c,d) cannot be the same number or cannot be repeated.
Penny Nom and Claude Tardif lui répond.
4 digit combinations 2001-09-22
Laura pose la question :
I need all of the 4 digit combinations using the numbers 0-9.
Harley Weston lui répond.
 
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