Whoops, forgot: I get 8.

Seems to be n^2 / 2

- Thu Sep 03, 2015 12:05 am
- Forum: Uncategorized
- Topic: array fun
- Replies:
**2** - Views:
**23**

Whoops, forgot: I get 8.

Seems to be n^2 / 2

Seems to be n^2 / 2

- Wed Sep 02, 2015 6:42 pm
- Forum: Uncategorized
- Topic: array fun
- Replies:
**2** - Views:
**23**

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 You have a 4by4 array with all 16 squares at value 0. Pick any square: all the squares in the same row and column, including the square you picked, will change values: 0 becomes 1, and 1 becomes 0. What is the minimum number of picks to end up with: 0 1 0 1 1 0 1 0 0 ...

- Mon Aug 31, 2015 3:57 pm
- Forum: Beginning Algebra
- Topic: When A,B and C work together, B does 4/15 of the work.
- Replies:
**2** - Views:
**23**

Thanks Buddy. Happy to see your note "but it all cancels out!". This was happening to me too! This is the exact original problem: Working together B and C take 50% more number of days than A,B and C together take, and A and B working together take 8/3 more number of days than A,B and C tak...

- Mon Aug 31, 2015 1:30 am
- Forum: Beginning Algebra
- Topic: When A,B and C work together, B does 4/15 of the work.
- Replies:
**2** - Views:
**23**

To complete a certain job, B and C (working together) take 50% more days than A, B, and C (working together); for example, if A+B+C take 10 days, then B+C take 15 days. When A, B, and C work together, B does 4/15 of the work. How long does it take to complete the job when A,B and C work together? Gi...

- Fri Aug 07, 2015 12:45 am
- Forum: Uncategorized
- Topic: making cubes
- Replies:
**7** - Views:
**239**

Thanks Shadow.

- Thu Aug 06, 2015 4:19 pm
- Forum: Uncategorized
- Topic: making cubes
- Replies:
**7** - Views:
**239**

Forget it; 333 is the solution!!!!!!!!!!!!!!!!

Found it at Sloane's integer sequences: sequence A000543

Thanks.

Hard to "picture" 333...need a couple Tylenols

Found it at Sloane's integer sequences: sequence A000543

Thanks.

Hard to "picture" 333...need a couple Tylenols

- Thu Aug 06, 2015 12:18 am
- Forum: Uncategorized
- Topic: making cubes
- Replies:
**7** - Views:
**239**

Thanks Buddy.

My 27 is wrong.

Added information:

If a cube can be obtained by rotating another cube,

these two cubes are NOT considered to be different.

If there was only 2 colors, the answer would be 23.

My 27 is wrong.

Added information:

If a cube can be obtained by rotating another cube,

these two cubes are NOT considered to be different.

If there was only 2 colors, the answer would be 23.

- Wed Aug 05, 2015 4:34 pm
- Forum: Uncategorized
- Topic: making cubes
- Replies:
**7** - Views:
**239**

Sorry, forgot to mention I get 27 as answer.

Can anyone confirm? Thanks.

Can anyone confirm? Thanks.

- Wed Aug 05, 2015 4:10 pm
- Forum: Uncategorized
- Topic: making cubes
- Replies:
**7** - Views:
**239**

You have an unlimited supply of black, red and white unit (1x1x1) cubes.

Use any 8 of these cubes to create different 2x2x2 cubes.

What is the maximum number of these cubes that you can create?

Use any 8 of these cubes to create different 2x2x2 cubes.

What is the maximum number of these cubes that you can create?

- Sun Jun 28, 2015 4:52 pm
- Forum: Intermediate Algebra
- Topic: Two equations with two unknowns
- Replies:
**2** - Views:
**316**

Start with criss-cross multiplication.