Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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Topic review (newest first)
How dos it work?
Yes it is.
Is it a gf?
Hm, try entering this into Maxima:
Oh! Got it!
No. If it is >=12, the complement's element sum is less than 55-12=43.
Suppose it is some other number, say 12
Why is that?
On second thoughts.... I doubt it
You are welcome!
I mean I understood TY
What is it?
It is half because if a set's sum of elements is >=28, then the sum of elements of its complement is <28. That means that there are as many subsets of the given set which have the element sum >=28 as there are with the element sum <28.
Yes, they let you use Mathematica there.