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#1 2011-03-02 01:55:32
- John E. Franklin
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Let's make triangular numbers.
The first triangular number is 1.
To continue this thread, simply
add 2, then 3, then 4, on forever
to make triangular numbers.
So I'll go first:
1
(one)
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#2 2011-03-02 12:28:07
- bobbym
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Re: Let's make triangular numbers.
3 is triangular and prime.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#3 2011-03-03 04:17:16
- G-man
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Re: Let's make triangular numbers.
6 Its triangular & first composite which isn't a square.
Maths!......
#4 2011-03-03 08:41:30
- bobbym
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Re: Let's make triangular numbers.
10 - The number of balls in a 10 ball rack. The first 2 digit triangular number! Also it is larger than 1 - 9 and has a zero in it.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#5 2011-03-03 11:31:13
- John E. Franklin
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Re: Let's make triangular numbers.
15
5 x (6/2)
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#6 2011-03-03 14:17:51
- bobbym
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Re: Let's make triangular numbers.
21 everybody's favorite number
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#7 2011-03-03 14:43:46
- MathsIsFun
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Re: Let's make triangular numbers.
28: has factors 1, 2, 4, 7, 14, 28 and reminds me of February
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#8 2011-03-03 14:53:48
- G-man
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Re: Let's make triangular numbers.
36
square of product of first two consecutive primes.
Maths!......
#9 2011-03-03 20:13:39
- bobbym
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Re: Let's make triangular numbers.
45 - ( Colt ) the best automatic ever made.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#11 2011-03-04 17:17:35
- bobbym
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Re: Let's make triangular numbers.
66 - the 11 the triangular number and the name of a now infamous highway here in the southwest.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#12 2011-03-07 01:21:55
- matthen
- Novice
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Re: Let's make triangular numbers.
78
note these triangular numbers go:
...,45,55,66,78,91, quite cool that 4,5,6,7,8,9 appear in order with no interruptions!
#13 2011-03-07 04:49:43
- bobbym
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Re: Let's make triangular numbers.
91 The most powerful triangular number and the one that wants to be a square the most. Also it is the only one that is 7 * 13.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#14 2011-03-23 10:31:19
- John E. Franklin
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Re: Let's make triangular numbers.
105=14+91
(14/2)*15
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#15 2011-03-23 11:48:39
- bobbym
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Re: Let's make triangular numbers.
The 15th triangular number is 120. Which is also 5!.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#16 2011-03-23 12:58:55
- G-man
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Re: Let's make triangular numbers.
136.........1, 3 & 6 are first 3 triangle numbers.
Maths!......
#17 2011-03-23 13:28:21
- bobbym
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Re: Let's make triangular numbers.
153
Is a square away from 2 squares. 12^2 + 3^3 = 153 and 13^2 - 4^2 = 153
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#18 2011-04-06 00:21:55
- John E. Franklin
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Re: Let's make triangular numbers.
171
153 + 18 = 171
(19 x 18) / 2
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#19 2011-04-06 00:50:56
- bobbym
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Re: Let's make triangular numbers.
190
The famous 190 Bowery St.
http://nymag.com/realestate/vu/2008/09/50481/
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#20 2011-04-17 06:29:10
- John E. Franklin
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Re: Let's make triangular numbers.
210
210 = 190 + 20
210 = 14 x 15 = (21 x 20) / 2 on this post # 20.
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#21 2011-04-17 06:51:43
- bobbym
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Re: Let's make triangular numbers.
231
One of the permutations of 123.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#22 2011-04-17 09:34:54
- John E. Franklin
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Re: Let's make triangular numbers.
253
253 = 231 + 22 = (1 + 22)+(2 + 21)+...(9 + 14)+(10 + 13)+(11 + 12)
= 11 x 23 = (23 x 22) / 2
This triangular number can form a digital triangle with 22 rows in 3 angles differing by 120 degrees.
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#23 2011-04-17 12:40:42
- bobbym
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Re: Let's make triangular numbers.
276
And that is real close to 253.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#24 2011-04-18 10:13:04
- John E. Franklin
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Re: Let's make triangular numbers.
300
Yeah 300!!!! 276 + 24. (25 x 24) / 2 A triangle with 24 rows.
Imagine for a moment that even an earthworm may possess a love of self and a love of others.
#25 2011-04-18 10:20:22
- bobbym
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Re: Let's make triangular numbers.
325 which is 3*5 - 2 = 13.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.