Assalammualaikum..........
Ada lagi satu disini.
Sebarang no. 2 digit yang di darabkan dengan 11, selitkan hasil tambah no.
tersebut ditengah2x.
Cth :
27 x 11 = 297, cara cepat 2+7 = 9, selitkan jumlah tersebut diantara 2 & 7
54 x 11 = 594
92 x 11 = 1012, cara cepat 9 + 2 = 11, selitkan jumlah tersebut diantara 9
& 2 tetapi tambahkan 1 (tempat puluh) ke 9.
Ibrahim Bin Haji
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roups.com cc:
Subject: Bismillah [hidayahnet]
Fwd: Magic of math
04/25/2005 05:43
PM
WCM <[EMAIL PROTECTED]> wrote:
Subject: FW: Magic of math
Date: Mon, 25 Apr 2005 17:03:21 +0800
From: "WCM" <[EMAIL PROTECTED]>
To: "bersamamu Moderator (E-mail)" <[EMAIL PROTECTED]>
-----Original Message-----
From: Mohamad b Saat [mailto:[EMAIL PROTECTED]
Sent: 21/04/2005 7:10 AM
To: WCM
Subject: Magic of math
A)
0 x 9 + 0 = 0
1 x 9 + 1 = 10
12 x 9 + 2 = 110
123 x 9 + 3 = 1110
1234 x 9 + 4 = 11110
12345 x 9 + 5 = 111110
123456 x 9 + 6 = 1111110
1234567 x 9 + 7 = 11111110
12345678 x 9 + 8 = 111111110
123456789 x 9 + 9 = 1111111110
B)
1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111 = 12345678987654321
C)
1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321
D)
1 x 18 + 1 = 19
12 x 18 + 2 = 218
123 x 18 + 3 = 2217
1234 x 18 + 4 = 22216
12345 x 18 + 5 = 222215
123456 x 18 + 6 = 2222214
1234567 x 18 + 7 = 22222213
12345678 x 18 + 8 = 222222212
123456789 x 18 + 9 = 2222222211
E)
123456789 + 987654321 = 1111111110
F)
1 x 142857 = 142857
2 x 142857 = 285714 (angka sama susunan berbeza)
3 x 142857 = 428571 (angka sama susunan berbeza)
4 x 142857 = 571428 (angka sama susunan berbeza)
5 x 142857 = 714285 (angka sama susunan berbeza)
6 x 142857 = 857142 (angka sama susunan berbeza)
7 x 142857 = 999999 (wauuu......Fantastikkk)
G)
Sebarang nilai jika dikalikan 9 maka jumlah hasilnya = 9 kita
buktikan.....
1 x 9 = 9
2 x 9 = 18, jumlah 1 + 8 = 9
3 x 9 = 27, jumlah 2 + 7 = 9
4 x 9 = 36, jumlah 3 + 6 = 9
dst. sampai tak terhingga.....
H)
22 x 9 = 198.....cara cepatnya 2 x 9 = 18, lalu selitkan angka 9 ditengah,
jadi 198....
buktikan sendiri cara cepat ini...
33 x 9 = 297, cara cepat 3 x 9, selipkan 9 ditengah
44 x 9 = 396
55 x 9 = 495
66 x 9 = 594
77 x 9 = 693
88 x 9 = 792
99 x 9 = 891
I)
Jika 3 angka kembar pula, selitkan angka 99 ditengahnya ....
kita buktikan......
222 x 9 = 1998, cara cepat 2 x 9= 18, selitkan 99 ditengah
333 x 9 = 2997
444 x 9 = 3996
555 x 9 = 4995
dst.......
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