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I have been given a set of numbers with a question added to them, help... (crazy)?
So, the set of numbers are as follows;
12-13
15-16-17-18
20-21-22-23-24
26-27
29-30-31-32-33-34-35-36-37-38-39-40-41-42-43-44-45-46
The question is, how do i figure out how many combinations of four numbers i can make out of these with sets being six numbers long. Also, consecutive numbers can not be used in a set.
Example: 12-15-17-21-23-26 would be one set with three combinations of four numbers...
Ive already pulled out my hair trying and retrying equations. Anyone have any insight to help?
Its 2 am, I give up tonight.
3 Answers
- SqdancefanLv 75 years agoFavorite Answer
Terms need to be defined more clearly. You are using the term "set" for two different things. And you are using the terms "combination" and "number" in ways that aren't obvious. (Somehow you count 3 combinations of four numbers in 12-15-17-21-23-26.)
When the problem statement is made more clear, the answer may be also.
- atsuoLv 65 years ago
I am not good at English , so I don't understand .
Think about the example 12-15-17-21-23-26 .
You said it is one set with three combinations of four numbers .
But what does " three combinations " mean ?
And what does " four numbers " mean ?
I think " three combinations of four numbers " means
" three combinations such that one combination contains four numbers " .
For example , (1-3-5-7) and (1-3-6-9) and (2-4-7-9) .
But 12-15-17-21-23-26 is completely different...
