720 permutations (the arrangement matters)
120 combinations (the arrangement doesn't matter)
10.
There are 5C3 = 5*4/(2*1) = 10 combinations
To find the number of 3-digit combinations using the digits 0 to 9 with repetition allowed, we consider that each digit can be any of the 10 digits (0-9). Since there are 3 positions in the combination, the total number of combinations is calculated as (10 \times 10 \times 10), which equals 1,000. Therefore, there are 1,000 possible 3-digit combinations.
10!/3! = 604800 different combinations.
Allowing repeats, but not leading 0s, the answer is 9,000,000,000
You could make 10*10*10*26*26*26 combinations, or 17576000 combinations.
There are 5C3 = 10 combinations.
10.
There are: 10C3 = 120
There are 5C3 = 5*4/(2*1) = 10 combinations
You can make 5 combinations of 1 number, 10 combinations of 2 numbers, 10 combinations of 3 numbers, 5 combinations of 4 numbers, and 1 combinations of 5 number. 31 in all.
There are 10 combinations of 1 number,10*9/(2*1) = 45 combinations of 2 numbers,10*9*8/(3*2*1) = 120 combinations of 3 numbers,10*9*8*7/(4*3*2*1) = 210 combinations of 4 numbers,10*9*8*7*6/(5*4*3*2*1) = 252 combinations of 5 numbers,210 combinations of 6 numbers,120 combinations of 7 numbers,45 combinations of 8 numbers,10 combinations of 9 numbers, and1 combination of 10 numbers.All in all, 210 - 1 = 1023 combinations. I have neither the time nor inclination to list them all.There are 10 combinations of 1 number,10*9/(2*1) = 45 combinations of 2 numbers,10*9*8/(3*2*1) = 120 combinations of 3 numbers,10*9*8*7/(4*3*2*1) = 210 combinations of 4 numbers,10*9*8*7*6/(5*4*3*2*1) = 252 combinations of 5 numbers,210 combinations of 6 numbers,120 combinations of 7 numbers,45 combinations of 8 numbers,10 combinations of 9 numbers, and1 combination of 10 numbers.All in all, 210 - 1 = 1023 combinations. I have neither the time nor inclination to list them all.There are 10 combinations of 1 number,10*9/(2*1) = 45 combinations of 2 numbers,10*9*8/(3*2*1) = 120 combinations of 3 numbers,10*9*8*7/(4*3*2*1) = 210 combinations of 4 numbers,10*9*8*7*6/(5*4*3*2*1) = 252 combinations of 5 numbers,210 combinations of 6 numbers,120 combinations of 7 numbers,45 combinations of 8 numbers,10 combinations of 9 numbers, and1 combination of 10 numbers.All in all, 210 - 1 = 1023 combinations. I have neither the time nor inclination to list them all.There are 10 combinations of 1 number,10*9/(2*1) = 45 combinations of 2 numbers,10*9*8/(3*2*1) = 120 combinations of 3 numbers,10*9*8*7/(4*3*2*1) = 210 combinations of 4 numbers,10*9*8*7*6/(5*4*3*2*1) = 252 combinations of 5 numbers,210 combinations of 6 numbers,120 combinations of 7 numbers,45 combinations of 8 numbers,10 combinations of 9 numbers, and1 combination of 10 numbers.All in all, 210 - 1 = 1023 combinations. I have neither the time nor inclination to list them all.
10*10
The number of combinations of 7 numbers from 10 is 10C7 = 10*9*8/(3*2*1) = 120
10!/3! = 604800 different combinations.
The answer is the number of combinations of 7 vertices from 10.That is 10C7 = 10!/(7!*3!) = 10*9*8/(3*2*1) = 120.And, there is no such word as verticles.The answer is the number of combinations of 7 vertices from 10.That is 10C7 = 10!/(7!*3!) = 10*9*8/(3*2*1) = 120.And, there is no such word as verticles.The answer is the number of combinations of 7 vertices from 10.That is 10C7 = 10!/(7!*3!) = 10*9*8/(3*2*1) = 120.And, there is no such word as verticles.The answer is the number of combinations of 7 vertices from 10.That is 10C7 = 10!/(7!*3!) = 10*9*8/(3*2*1) = 120.And, there is no such word as verticles.
Allowing repeats, but not leading 0s, the answer is 9,000,000,000