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

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Man who stick nose in punch, gets punch in nose.

What do you think of this?

http://video.yahoo.com/video/play?vid=728772&cache=1

Q: Why should you never go out into the jungle between 2pm and 4pm?

A: Because elephants are falling out of the trees.

Q: Why are Pygmies so small?

A: Because they went out into the jungle between 2pm and 4pm.

**R3hall**- Replies: 8

There was a young man who was the first in his family to graduate from High School and go off to college. He came out of a rural backwards community. At Christmas break, he returned home to his family. Relatives were crammed into the house. The father, all proud and exited said, "Well son, this is your first semester in college. Say something real smart to the family." The young man replied "πr2" "What!?" exclaimed the father. "Why son, that is the dumbest thing I ever heard you say! Any dern fool knows that pie are round, cobbler are square!"

Wikipedia has an article on triangle numbers. At the very bottom, they give a formula for testing if a number is a triangle number. If it comes out as a whole integer, it is a triangle. If it comes out with numbers right of the decimal, it is NOT. The same idea would apply for a square root. If I placed a number in the square root sign, and it came out a whole integer, it's a square number. If it has numbers right of that decimal point, it ain't.

My forum http://forums.delphiforums.com/figurate/start also goes into more details.

http://forums.delphiforums.com/figurate/start

You may also want to look at the math books of the late Dr. Lancelot Hogben. Very valuable for all ages and all levels of understanding. I have some book lists at my forum that point to him, among other great minds.

http://forums.delphiforums.com/figurate/start

N2 = square number

√ = square root

Tn = triangle number

(-1+√(8n+1))/2= triangle root

**R3hall**- Replies: 9

Good afternoon. A member of my forum that I host referred us to you lovely site. We are looking for formulas that help generate and extracts roots of figurate numbers. It is an interesting but often neglected field of study. You could be the ones who help us make great discoveries.:D You are welcomed to share info with us: http://forums.delphiforums.com/figurate/start

Have a great week.:)

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