P.2 Maths

2006-10-18 1:54 am

P.2 maths is a geart thing. Do you kwon about it? If you do not kwon, plases call 21949404.

90+90+90+90+900+900+900+900+9+9+9+9=??????????

回答 (10)

2006-10-18 1:59 am

✔ 最佳答案

90+90+90+90+900+900+900+900+9+9+9+9
=90x4+900x4+9x4
=360+3600+36
=3960+36
=3996

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2007-03-11 9:47 pm

發問者評價:
Thank you! It is

90+90+90+90+900+900+900+900+9+9+9+9
=90x4+900x4+9x4
=360+3600+36
=3960+36
=3996! ← factorial???????

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2006-10-20 1:10 am

90+90+90+90+900+900+900+900+9+9+9+9
=3996

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2006-10-18 6:09 am

90+90+90+90+900+900+900+900+9+9+9+9=3996

參考: me

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2006-10-18 4:53 am

3942! OK! OK !

參考: me

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2006-10-18 4:39 am

90+90+90+90+900+900+900+900+9+9+9+9
=3996

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2006-10-18 3:55 am

90+90+90+90+900+900+900+900+9+9+9+9=
（90+900+9）×4=
999X4=
3996

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2006-10-18 1:58 am

===3996

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2006-10-18 1:58 am

90+90+90+90+900+900+900+900+9+9+9+9
=3996

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2006-10-18 1:57 am

3636~

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