There are 8!/[6!(8-6)!] = 8*7/2 = 28 - too many to list.
If you use each number once, there are six combinations.
It is 0.638
Seven and eight
3 million eight hundred forty six thousand five hundred and twenty eight.
There are 8C6 = 8*7/(2*1) = 28 combinations.
The number of combinations of six numbers that can be made from seven numbers will depend on if you can repeat numbers. In all there are over 2,000 different numbers that can be made.
Assuming that the six numbers are different, the answer is 15.
There are many different combinations of six numbers, but the sum of those numbers would have to be 24.
There is 1 combination of all ten numbers, 10 combinations of one number and of nine numbers, 45 combinations of two or eight numbers, 120 combinations of three or seven numbers, 210 combinations of four or six numbers and 252 combinations of five numbers. That is 1023 = 210 - 1 in total.
If the numbers are allowed to repeat, then there are six to the fourth power possible combinations, or 1296. If they are not allowed to repeat then there are only 360 combinations.
There are: 7C6 = 7
There are 63 numbers 1 to 500 that are divisible by six but not by eight.
figure it out then tell me :)
Six combinations: 123, 132, 213, 231, 312, 321