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There is only one combination. The order of the digits in combinations makes no difference. They are considered as being different if they are permutations, not combinations.
Assuming that the only permitted operation is addition, then there are 4 combinations.
There are only 10 combinations. In each combination one of the 10 digits is left out.
There are only five combinations: 1234, 1235, 1245, 1345 and 2345.
Only one.
I think that stairs is alot of steps together and steps are only a few in numbers. Also it could be that stairs are inside and steps are outside.
there are between 1665 steps to 1710 steps all the way to the top depending on which side you try..... the problem is that you can only climb by stairs up to the second floor....from thesecond floor to the top, its forbidden to use the stairs and you have to take the lift (for safety reasons)
Only if those stairs are quite shallow and the length of the steps are much longer than what is standard for humans to climb and descend.
First you try to solve it, but you will soon realize that there is only two steps. Guess and Check.
Two make combinations you would take 2x1=2 combinations only
It depends on combinations with how many numbers. There is only one combination of 99 numbers taken from 99.
You need to specify how many characters, form the eight, are to be in the combinations. For example, there is only 1 combination of 8 characters.
There is only one combination. The order of the digits in combinations makes no difference. They are considered as being different if they are permutations, not combinations.
Assuming that the only permitted operation is addition, then there are 4 combinations.
There are only four combinations but there are 8 permutations.
There are only 10 combinations. In each combination one of the 10 digits is left out.
There are only five combinations: 1234, 1235, 1245, 1345 and 2345.