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

You are not logged in.

- Topics: Active | Unanswered

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

663 = 2^2 - 3^2 - 7^2 - 8^2 - 11^3 - 15^3 + 8^5 - 12^5 - 14^5 + 15^5

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**676****676****676** = 125 + 131 + 119 + 62 + 63 + 44 + 51 + 81**676****676**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

Just 689, fooled ya!

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**igloo** **myrtilles** **fourmis**

Offline

**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,352

715:

7 + 1 + 5 = 13

715 = the sum of 13*1, 13*2, 13*3, 13*4...13*10

715 = the sum of the digits of the first 58 answers (and 5 + 8 = 13)

*Last edited by phrontister (2010-02-09 11:42:27)*

"The good news about computers is that they do what you tell them to do. The bad news is that they do what you tell them to do." - Ted Nelson

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

728

728

728

**igloo** **myrtilles** **fourmis**

Offline

**d1whohatesmath****Member**- Registered: 2010-02-08
- Posts: 26

728

=13

____

741

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

7 4 1

+ 1 3

______

7 5 4

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

767 - a really big plane.

and

767 = 2^2 - 3^2 - 6^2 - 11^2 - 12^2 - 13^3 - 17^3 -8^5 -9^5 + 10^5

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.** **A number by itself is useful, but it is far more useful to know how accurate or certain that number is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

780

780

780 = 13 x 60

780

780

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

793 = -2^2 + 3^2 + 6^2 - 8^2 - 12^2 - 12^3 - 17^3 - 8^5 - 12^5 - 15^5 + 16^5

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**806****806****806****806****806****806**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

819

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**832****832****832****832****832****832**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

845

845 = 10^5 - 2^2 - 4^2 -8^2 -12^2 -13^3 -17^3 -8^5 - 9^5

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**858****858****858****858****858****858**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

3^2 + 6^2 + 10^2 + 12^2 + 15^2 + 19^2 - 2^2 = 871

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**884****884****884****884****884****884**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

900 - 3 = 897

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

900 + 10 = **910****910****910****910****910****910****910**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

923 = 4^5 - 2^2 - 4^2 - 9^2

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**936****936****936****936****936****936****936****936**

*Last edited by John E. Franklin (2010-02-17 08:30:53)*

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

949 a palindrome!

4^5 + 5^2 - 10^2 = 949

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline

**John E. Franklin****Member**- Registered: 2005-08-29
- Posts: 3,588

**962****962****962****962****962****962****962****962**

**igloo** **myrtilles** **fourmis**

Offline

**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 102,957

975 = 4^5 - 7^2

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.**

Offline