Sujet: four digits liste de sujets
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	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		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.
	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 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.
	Four digit "combinations" using 0124		2013-02-27
		Ayana pose la question : What are all the possible four digit combinations using 0124. Please list them for me. Thank you. Penny Nom 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.
	What numbers can I be?		2010-11-13
		john pose la question : my thousands digit is 2 times my ones digit.my hundreds digit is my ones digit plus 2. my tens digit is the difference between my thousands and hundreds digit what numbers can i be? Penny Nom lui répond.
	Four digit numbers		2010-05-22
		tyeisha pose la question : Whats all the four digit numbers you can come up with using numbers 0-9 Tyler Wood 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		2009-03-10
		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.
	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.
	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.

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