There are 5C2 = 5*4/(2*1) = 10 combinations.
There are 120 permutations and 5 combinations.
The list of 5 number combinations from the numbers 1-2-3-4-5-6-7-8 includes various groupings. For example, some combinations are: (1, 2, 3, 4, 5), (2, 3, 4, 5, 6), (3, 4, 5, 6, 7), (4, 5, 6, 7, 8), and (1, 3, 5, 7, 8). The total number of unique combinations can be calculated using combinatorial methods.
all numbers have to be different 720 360 (6*5*4*3*2*1), * * * * * Wrong. Combinations do not have to be different. Those are permutations. There are only 6C4 = 6*5/(2*1) = 15 combinations.
120 different combinations (5 x 4 x 3 x 2).
654321-100000= 554321 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 120 permutations and 5 combinations.
They are: 2*2*3*5 = 60
The list of 5 number combinations from the numbers 1-2-3-4-5-6-7-8 includes various groupings. For example, some combinations are: (1, 2, 3, 4, 5), (2, 3, 4, 5, 6), (3, 4, 5, 6, 7), (4, 5, 6, 7, 8), and (1, 3, 5, 7, 8). The total number of unique combinations can be calculated using combinatorial methods.
all numbers have to be different 720 360 (6*5*4*3*2*1), * * * * * Wrong. Combinations do not have to be different. Those are permutations. There are only 6C4 = 6*5/(2*1) = 15 combinations.
Assuming a number can appear only once, there are 47C5 = 47*46*45*44*43/(5*4*3*2*1) = 1,533,939 combinations.
just intrested in the number combinations * * * * * Number of combinations = 56C6 = 56*55*54*53*52*51/(6*5*4*3*2*1) = 32,468,436
To calculate the number of possible combinations for the number 24680 using each number only once, we can use the formula for permutations. There are 5 numbers to arrange, so the number of permutations is 5! (5 factorial), which is equal to 5 x 4 x 3 x 2 x 1 = 120. Therefore, there are 120 possible combinations for the number 24680 using each number only once.
120 different combinations (5 x 4 x 3 x 2).
654321-100000= 554321 combinations
There are 2*2*5 = 20 combinations.
The number of combinations is 20C5 = 20!/(15!*5!) = 20*19*18*17*16/(5*4*3*2*1) = 15,504