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There are 12C4 4 NUMBER combinations. And that equals 12*11*10*9/(4/3/2/1) = 495 combinations.

However, some of these, although 4 number combinations consist of 7 digits eg 1, 10, 11, and 12. Are you really sure you want 4-DIGIT combinations?

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How many combinations are there for a four digit number?

64


How many place combinations in a four digit number and all have to go in diff spots eg 1234 4321 2134 etc numbers cant change and have to stay same four numbers?

How many place combinations in a four digit number and all have to go in different spot example: 1234, 4321, 2134 etc. numbers can't change and have to stay four numbers?The answer would be 36 different combinations. This is simply the counting principle and it's easy for anyone to learn.


How many different four digit combinations are there of the numbers zero through nine and using one number twice in the combination?

There are 360 of them.


How many four digit numbers are possible if the pin cannot begin with a 0 and the pin must be an odd number?

There are 4,500 combinations.


How many three digit or four digit even numbers can be formed from the set (23567)?

To form three-digit even numbers from the set {2, 3, 5, 6, 7}, we can use the digits 2 or 6 as the last digit (to ensure the number is even). For each case, we can choose the first two digits from the remaining four digits. For three-digit numbers, there are 2 options for the last digit and (4 \times 3 = 12) combinations for the first two digits, resulting in (2 \times 12 = 24) even numbers. For four-digit even numbers, we again have 2 options for the last digit. The first three digits can be selected from the remaining four digits, giving us (4 \times 3 \times 2 = 24) combinations for each last digit. Thus, there are (2 \times 24 = 48) even four-digit numbers. In total, there are (24 + 48 = 72) three-digit and four-digit even numbers that can be formed from the set.

Related Questions

How many four digit combinations are there for the numbers 1-6?

7


If using 7 single digit numbers how many different combinations can you get?

Number of 7 digit combinations out of the 10 one-digit numbers = 120.


How many 5 digit combos in 30 numbers?

The answer will depend on how many digits there are in each of the 30 numbers. If the 30 numbers are all 6-digit numbers then the answer is NONE! If the 30 numbers are the first 30 counting numbers then there are 126 combinations of five 1-digit numbers, 1764 combinations of three 1-digit numbers and one 2-digit number, and 1710 combinations of one 1-digit number and two 2-digit numbers. That makes a total of 3600 5-digit combinations.


How many combinations are there for a four digit number?

64


How many place combinations in a four digit number and all have to go in diff spots eg 1234 4321 2134 etc numbers cant change and have to stay same four numbers?

How many place combinations in a four digit number and all have to go in different spot example: 1234, 4321, 2134 etc. numbers can't change and have to stay four numbers?The answer would be 36 different combinations. This is simply the counting principle and it's easy for anyone to learn.


How many different four digit combinations are there of the numbers zero through nine and using one number twice in the combination?

There are 360 of them.


How many four digit numbers are possible if the pin cannot begin with a 0 and the pin must be an odd number?

There are 4,500 combinations.


How many 4 digit combanations using the numbers 1-7?

There are 840 4-digit combinations without repeating any digit in the combinations.


How many different combinations are possible multiplying 8 different 7 digit numbers?

56 combinations. :)


How many three digit or four digit even numbers can be formed from the set (23567)?

To form three-digit even numbers from the set {2, 3, 5, 6, 7}, we can use the digits 2 or 6 as the last digit (to ensure the number is even). For each case, we can choose the first two digits from the remaining four digits. For three-digit numbers, there are 2 options for the last digit and (4 \times 3 = 12) combinations for the first two digits, resulting in (2 \times 12 = 24) even numbers. For four-digit even numbers, we again have 2 options for the last digit. The first three digits can be selected from the remaining four digits, giving us (4 \times 3 \times 2 = 24) combinations for each last digit. Thus, there are (2 \times 24 = 48) even four-digit numbers. In total, there are (24 + 48 = 72) three-digit and four-digit even numbers that can be formed from the set.


How many combinations for four numbers using four numbers?

4!=4x3x2x1=24


How many combinations of 2 digit numbers can be produced from 01 99?

45.