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Q: How many 2 digit combinations can be made from 5 numbers combined with 4 different numbers?

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

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.

Related questions

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

56 combinations. :)

9

Only three: 12, 13 and 23. Remember that the combinations 12 and 21 are the same.

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.

We can use 36 characters for each of the slots in the combination. Therefore, we have 36^11 possible combinations, or 131,621,703,842,267,136 combinations.

66

15

10,000

2304

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