0
There are 4 choices for the first digit (1, 2, 3, or 4) since zero cannot be the first digit in a four-digit number. For the second digit, there are 3 remaining choices, for the third digit there are 2 choices, and for the fourth digit, there is only 1 choice left. Therefore, the total number of four-digit numbers that can be formed using the digits 1, 2, 3, and 4 is 4 x 3 x 2 x 1 = 24.
24 possible combinations:
1234,
1243,
1324,
1342,
1423,
1432,
2134,
2143,
2314,
2341,
2413,
2431,
3124,
3142,
3214,
3241,
3412,
3421,
4123,
4132,
4213,
4231,
4312,
4321
Generalizing it, you can only make n! combinations out of n different digits.
n! = 1 * 2 * 3 * ... * n . (Math definition: the factorial of a positive integer n, denoted by n!, is the product of all positive integers less than or equal to n)
When n = 4 , n! = 1 * 2 * 3 * 4 = 24.
If 16 digits are available, let's say 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F you can make
1 * 2 * 3 * 4 * ... * 16 = 2 ^15 * 3 ^6 * 5 ^3 * 7 ^2 * 11 * 13 = Excuse me, but I am not going to bring the product. Use your calculator (and be prepared for an overflow).
Anyway, it is:
16! = 32768 * 729 * 125 * 49 * 11 * 13 = 32768 * 729 *125 * 7007 = 32768 * 729 * 875875 = whatever... almost 20 trillion combinations of 16 different digits.
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How many four digit numbers containing no zeros have the property that whenever any one of its four digits is removed the resulting three digit number is divisible by 3?
1234
How many 4-digit pin numbers are available if no number is repeated?
A lot. And there is akways the code. 1234
How may 4 digit number parlay combinations are possible by using 6 numbers And what are the combinations?
There are 15, and they are:1234 1235 1236 1245 1246 1256 1345 1346 1356 1456 2345 2346 2356 2456 3456.
How many three digit combinations can be formed using numbers 1234?
There are 24 combinations if you use each digit only once per combination: 123 124 132 134 142 143 213 214 231 234 241 243 312 314 321 324 341 342 412 413 421 423 431 and 432.
How many 3 number combinations are possible with numbers 1234?
4 of them. In a combination the order of the numbers does not matter.
How many 4 digit numbers can you make using 1234 without repeating any of the same digits?
24
How many four digit numbers can you make using the digits 1234 and the 2 and 3 must be next to each other?
Twelve of them.
What is the greatest and the smallest 4 digit numbers using the digit 1234?
smallest=1234 greatest=4321
How many two digit numbers can be made using the digits 1234?
With repeats: 4×4 = 16; Without repeats: 4×3 = 12.
How many four-digit numbers can you make using the digits 1234 without repeating any of the digits in the same number?
4 x 3 x 2 ie 24
How many four-digit numbers can be formed with the numbers 1234 if no digits can be repeated?
4*3*2*1 = 24
What does four digits numbers mean?
1234, 2637, 7777, 2727 are examples of a four digit number. So any random four numbers are four digits.
How many six digits numbers can be formed using 1234?
There are 4^6 = 4096 such numbers.
How many 3 digit numbers can be formed from the digits 1234?
64 if repetition is allowed.24 if repetition is not allowed.
How many four digit numbers can be formed out of 1234 without repeating any of the digits in the same number?
256
How many 4 digit numbers can be formed from the digits 1234 if any of the digits are not repeated?
That would be 4! = 4 * 3 * 2 * 1 = 24
How many four digit numbers containing no zeros have the property that whenever any one of its four digits is removed the resulting three digit number is divisible by 3?
1234
