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.
Wiki User
∙ 2013-04-20 18:39:07There are 45 combinations.
6
You can make 6 combinations with 3 numbers. They are: 123 213 312 132 231 321 * * * * * NO! Those are permutations! In combitorials, the order does not matter so that the combination 123 is the same as the combination 132 etc. So all of the above comprise just 1 combination. With three numbers you can have 1 combination of three numbers (as discussed above), 3 combinations of 2 numbers (12, 13 and 23) 3 combinations of 1 number (1, 2 and 3) In all, with n numbers you can have 2n - 1 combinations. Or, if you allow the null combination (that consisting of no numbers) you have 2n 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.
There are 8!/[6!(8-6)!] = 8*7/2 = 28 - too many to list.
Their is 25 combinations
Assuming that the six numbers are different, the answer is 15.
14 * * * * * Wrong! There are 15. 4 combinations of 1 number, 6 combinations of 2 number, 4 combinations of 3 numbers, and 1 combination of 4 numbers.
There are 8*7/(2*1) = 28 combinations.
The rearrangement of 5 figure numbers will be 5x4x3x2x1 which is 120 combinations, when you don't repeat a number.
There are 11C2 = 11*10/(2*1) = 55 combinations.
You would get 4!/2! = 12 combinations.
There are 21 combinations.
none
There are 32C3 = 32*31*30/(3*2*1) = 4960 combinations. I do not have the inclination to list them all.
Two make combinations you would take 2x1=2 combinations only
There are 233 - 1 = 8,589,934,591 combinations, not including the null combination.