Having fun with numbers

[Allan at Wallan]

These are only an illustration of having fun with numbers
... no need to work out solutions.

1x8+1=9
12x8+2=98
123x8+3=987
1234x+4=9876
12345x8+5=98765
123456x8+6=987654
1234567x8+7=9876543
12345678x8+8=98765432
123456789x8+9=987654321

1x9+2=11
12x9+3=111
123x9+4=1111
1234x9+5=11111
12345x9+6=111111
123456x9+7=1111111
1234567x9+8=11111111
12345678x9+9=111111111
123456789x9+10=1111111111

1x1=1
11x11=121
111x111=12321
1111x1111=1234321
11111x11111=123454321
111111x111111=12345654321
1111111x1111111=1234567654321
11111111x11111111=123456787654321
111111111x111111111=12345678987654321

No wonder Tax Accountants have an easy job.

Allan

_______________________________________

I once stole a calendar - and got 12 months.

[Wongo]

See mathematics is fascinating.

[joe greiner]

Google ["casting out nines"], with quotes to marry the keywords, for an interesting ancient verification process.

Joe

[Frank&Earnest]

Must have been more exciting 500 years ago, when Tartaglia, Cardano, Del Ferro, Fibonacci etc. were working these things out. Here is another one, just to upset Wongo:

1/9 = .11111111.......
2/9 = .22222222.......
3/9 = .33333333.......
4/9 = .44444444.......
5/9 = .55555555.......
6/9 = .66666666.......
7/9 = .77777777.......
8/9 = .88888888.......
9/9 = .99999999....... = 1

[Wongo]

... just to upset Wongo:

9/9 = .99999999....... = 1

[Wongo]

I just invented another one

1 + 0 = 1
1 + 1 = 2
1 + 2 = 3
1 + 3 = 4
1 + 4 = 5
1 + 5 = 6
1 + 6 = 7
1 + 7 = 8
1 + 8 = 9

[zelk]

I just invented another one

1 + 0 = 1
1 + 1 = 2
1 + 2 = 3
1 + 3 = 4
1 + 4 = 5
1 + 5 = 6
1 + 6 = 7
1 + 7 = 8
1 + 8 = 9

Wongo,

You're right, maths is interesting, but I reckon you're even more interesting!

Zelk

[Wongo]

I’ll take it as a compliment.

[wheelinround]

FE Must have been more exciting 500 years ago, when Tartaglia, Cardano, Del Ferro, Fibonacci etc. were working these things out. Here is another one, just to upset Wongo:

1/9 = .11111111.......
2/9 = .22222222.......
3/9 = .33333333.......
4/9 = .44444444.......
5/9 = .55555555.......
6/9 = .66666666.......
7/9 = .77777777.......
8/9 = .88888888.......
9/9 = .99999999....... = 1

500 years ago these guy were like present day government employees not much worth doing today so lets invent something to do and getting paid for sitting on their behind.

[Ron Dunn]

I'd rather public servants sat around inventing interesting number tricks than imposing more stupid bloody rules on everything

Death to the Nanny State. Crucify the Safety Nazis. Hang, Draw and Quarter Harold (Screwball) Scruby.

Give me numbers any day.

[wheelinround]

With these numbers they create statistics which lie which people use to create Nazi laws

[AlexS]

OK, here's one for the kids...
12345679 x (9x1) = 111111111
12345679 x (9x2) = 222222222
...etc.

[Frank&Earnest]

500 years ago these guy were like present day government employees not much worth doing today so lets invent something to do and getting paid for sitting on their behind.

? Fibonacci was a trading post manager, Cardano was a physician, Luca Paciolo a university professor... The fact that later in life they might have had a pension from the local potentate is because they had not invented superannuation yet.

[ss_11000]

what did pythagoras do for a living

[Frank&Earnest]

He was a rich merchant. Shouldn't you be actually studying maths instead of mucking around with this stuff?