educational materials

sunnyajmal · V I P Joined: 18 Feb 2008 Posts: 8649 Location: Hearts

u have to vote yar..

Haily · NK Commander Joined: 22 Jul 2007 Posts: 2985

but i like em both..

by the way darani why did wrote an "s" with math..

sunnyajmal · V I P Joined: 18 Feb 2008 Posts: 8649 Location: Hearts

no problem yar... the world is still in its place...lolz

Haily · NK Commander Joined: 22 Jul 2007 Posts: 2985

lolzzz

sunnyajmal · V I P Joined: 18 Feb 2008 Posts: 8649 Location: Hearts

what lolzzzzz?

Haily · NK Commander Joined: 22 Jul 2007 Posts: 2985

it means im smiling or laughing..why do u ask..

lol=laugh out loud

sunnyajmal · V I P Joined: 18 Feb 2008 Posts: 8649 Location: Hearts

hmmmm......so u were laughing i thought u r crying.....lol

Haily · NK Commander Joined: 22 Jul 2007 Posts: 2985

no ajmal i was laughing..sadly ur thoughts were wrong..hehe

sunnyajmal · V I P Joined: 18 Feb 2008 Posts: 8649 Location: Hearts

oh i c....

darani · Posted: September 27 2008 Post subject:

12345679 * 9 = 111,111,111
12345679 * 18 = 222,222,222
12345679 * 27 = 333,333,333
12345679 * 36 = 444,444,444
12345679 * 45 = 555,555,555
12345679 * 54 = 666,666,666
12345679 * 63 = 777,777,777
12345679 * 72 = 888,888,888
12345679 * 81 = 999,999,999

darani · Posted: September 27 2008 Post subject:

In the following pattern chart, notice that the first and last digits of the
products are the digits of the multiples of 9.

987654321 * 9 = 08 888 888 889
987654321 * 18 = 17 777 777 778
987654321 * 27 = 26 666 666 667
987654321 * 36 = 35 555 555 556
987654321 * 45 = 44 444 444 445
987654321 * 54 = 53 333 333 334
987654321 * 63 = 62 222 222 223
987654321 * 72 = 71 111 111 112
987654321 * 81 = 80 000 000 001

darani · Posted: September 27 2008 Post subject:

0 * 9 + 1 = 1
1 * 9 + 2 = 11
12 * 9 + 3 = 111
123 * 9 + 4 = 1,111
1,234 * 9 + 5 = 11,111
12,345 * 9 + 6 = 111,111
123,456 * 9 + 7 = 1,111,111
1,234,567 * 9 + 8 = 11,111,111
12,345,678 * 9 + 9 = 111,111,111

darani · Posted: September 27 2008 Post subject:

0 * 9 + 8 = 8
9 * 9 + 7 = 88
98 * 9 + 6 = 888
987 * 9 + 5 = 8,888
9,876 * 9 + 4 = 88,888
98,765 * 9 + 3 = 888,888
987,654 * 9 + 2 = 8,888,888
9,876,543 * 9 + 1 = 88,888,888
98,765,432 * 9 + 0 = 888,888,888

darani · Posted: September 27 2008 Post subject:

987 * 1,001 = 987,987

darani · Posted: September 27 2008 Post subject:

Any six-digit number composed of two repeating sequences of three digits is divisible by 7, 11, and 13. For example,

643,643 / 7 = 91,949

643,643 / 11 = 58,513

643,643 / 13 = 49,511

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