ilginç sayılar

• 1

................1x8+1=9

..............12x8+2=98

............123x8+3=987

.........1234x8+4 =9876

........12345x8+5=98765

......123456x8+6=987654

....1234567x8+7=9876543

..12345678x8+8=98765432

123456789x8+9=987654321

• 2

12 x 42 = 21 x 24

23 x 96 = 32 x 69

24 x 84 = 42 x 48

13 x 62 = 31 x 26

46 x 96 = 64 x 69

• 3

3 x 37 = 111

6 x 37 = 222

9 x 37 = 333

12 x 37= 444

15 x 37 = 555

18 x 37 = 666

21 x 37 = 777

24 x 37 = 888

27 x 37 = 999

• 4

(0 x 9) + 8 = 8

(9 x 9) + 7 = 88

(98 x 9) + 6 = 888

(987 x 9) + 5 = 8888

(9876 x 9) + 4 = 88888

(98765 x 9) + 3 = 888888

(987654 x 9) + 2 = 8888888

(9876543 x 9) + 1 = 88888888

(98765432 x 9) + 0 = 888888888

(987654321 x 9) - 1 = 8888888888

• 5

 3² + 4² = 5²


10² + 11² + 12² = 13² + 14²

21² + 22² + 23² + 24² = 25² + 26² + 27²

36² + 37² + 38² + 39² + 40² = 41² + 42² + 43² + 44²

( http://www.matematikalemi.com/index.php?option=com_content&view=article&id=14:sayi&catid=1:dosya adresinden alınmıştır. )