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Q: How many 5 digit number combinations from 1 to 60slide1?

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64

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

6 of them.

It depends on how many digit you are choosing from.

I am assuming you mean 3-number combinations rather than 3 digit combinations. Otherwise you have to treat 21 as a 2-digit number and equate it to 1-and-2. There are 21C3 combinations = 21*20*19/(3*2*1) = 7980 combinations.

44

the answer is = first 2-digit number by using 48= 28,82 and in 3 digit is=282,228,822,822

How many four digit combinations can be made from the number nine? Example, 1+1+2+5=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 15180 combinations.

There are 126 different 5 digit combinations. Note that the combination 12345 is the same as the combination 45312.

There are twelve possible solutions using the rule you stated.

There is only one combination. There are many permutations, though.

there are 10 possibilities for the first spot, 9 for the second, 8 for the third 10x9x8=720 combinations

There are 38760 combinations.

about 12

10,000 combinations.

There are 9C2 = 9*8/(2*1) = 36 2-digit combinations.

If the 6 digits can be repeated, there are 1296 different combinations. If you cannot repeat digits in the combination there are 360 different combinations. * * * * * No. That is the number of PERMUTATIONS, not COMBINATIONS. If you have 6 different digits, you can make only 15 4-digit combinations from them.

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

There are 1,120,529,256 combinations.

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

Using the eight digits, 1 - 8 ,-- There are 40,320 eight-digit permutations.-- There is 1 eight-digit combination.

There are 9C3 = 84 combinations.

If every number can be used as many times as you like, there are 104 = 10000 different combinations. If each number can only be used once, there are 9!/(9 - 4)! = 5040 combinations.