There are 233 - 1 = 8,589,934,591 combinations, not including the null combination.
34*33/2 = 561
To calculate the number of combinations possible from a set of 34 numbers, you would use the formula for combinations, which is nCr = n! / r!(n-r)!. In this case, n = 34 (the total number of numbers) and r = the number of numbers you want to choose in each combination. If you want to find all possible combinations of choosing 2 numbers from the set of 34, you would calculate 34C2 = 34! / 2!(34-2)! = 561 total combinations.
There are 35C4 = 35*34*33*32/(4*3*2*1) = 52,360 combinations.
Three combinations: 23, 24 and 34
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 8*7/(2*1) = 28 combinations.
There are 11C2 = 11*10/(2*1) = 55 combinations.
34
There are 21 combinations.
none
1, 2, 17, 34.
There are 32C3 = 32*31*30/(3*2*1) = 4960 combinations. I do not have the inclination to list them all.