Mehrab4226 wrote: ↑Sat Apr 03, 2021 7:06 pm
M F Ruhan wrote: ↑Sat Apr 03, 2021 2:00 pm
Mehrab4226 wrote: ↑Fri Apr 02, 2021 9:32 pm
we cannot create combinations of 4 numbers on all those 5 subsets. And the answer should be 48.
Why can't we create combinations of 4 numbers on all those subsets? Would you please explain
we can creat what you are saying in $\{1,2,3,4,5\} subset. But we cannot do the same for $\{3,4,5,6,7\}$. We cannot make combinations with $\{6,7,8,9\}$ because 6,7 is already on the main subset.
Yes, we can't, but as result we can create new combinations using 1,2 . As you can see for each main subset always extra 4 numbers are remaining . For example-1,7,8,9 for{2,3,4,5,6}
1,2,8,9 for {3,4,5,6,7} and so on for the other 3.
Does your solution contain subsets like {2,4,5,6,7,8} or {1,3,4,5,6,7,8}
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