Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20100624 23:39:44
its tof to answer ?1+3+5+7+9+11+13+15+17+19=100 #2 20100624 23:48:57
Re: its tof to answer ?Hi rkonweb; In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. #3 20100626 07:37:15
Re: its tof to answer ?As you say, adding any 5 odd numbers would make it impossible, but he mentioned any 5 digits rather than numbers. We can therefore use that to get 4 odd numbers using 5 digits from the sequence that add up to 50. One I found was 1 + 5 + 9 + 35. #4 20100626 07:42:54
Re: its tof to answer ?H aawood; Which is not quite correct, should read: If you google for this you will find many other strange answers. In mathematics, you don't understand things. You just get used to them. I have the result, but I do not yet know how to get it. All physicists, and a good many quite respectable mathematicians are contemptuous about proof. 