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

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56 combinations. :)

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.

66

There are 1140 five digit combinations between numbers 1 and 20.

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

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56 combinations. :)

9

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.

There are 38760 combinations.

9^9 = 387420489 different digit combinations.

There are no single-digit numbers divisible by 7000.

66

15

10,000

2304

There are 1140 five digit combinations between numbers 1 and 20.

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

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