Math Forum :: View topic – 乘精佳搭–誠徵解答

For how many times do you go to MD forum each week?

=5

 87% 

[ 14 ]

Total Votes : 16

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marco_dick

Frequent Visitor
Joined: 02 Nov 2003Posts: 164

Location: HKUST Maths

Posted: Tue Aug 10, 2004 6:34 pm    Post subject: 乘精佳搭–誠徵解答

如何用四個4,配合加減乘除、括號、power(次方)、Factorial 、開方、來拼出一條表達式等於39及41(可使用44,當用兩個4)?_________________人生每一步,都影響著下一步,在佛家上,稱為「業」。這不是「因」,因為「因」是絕對的,即每做「因」,必有「果」。

以前我不明白,但見奧雲在皇馬越打越好,我明白了。祝奧雲平步青雲!

Fed

Joined: 27 Mar 2004Posts: 12

Location: Txxxx Yx

Posted: Tue Aug 17, 2004 4:56 pm    Post subject:

可唔可以用 .4? (4*4-.4)/.4=39 41 一樣咁計 .444444444444444444444… 又得唔得呢? 有 4/9 好計好多~

4+(4!+root .444444444444…)/root .4444444444444…=41

Kenny TM~

Frequent VisitorJoined: 20 Jan 2004Posts: 141

Posted: Tue Aug 17, 2004 9:12 pm    Post subject:

Fed wrote:

可唔可以用 .4? (4*4-.4)/.4=39 41 一樣咁計

得~(卦) 4.4 我都用過 =.=

Quote:

.444444444444444444444… 又得唔得呢? 有 4/9 好計好多~

4+(4!+root .444444444444…)/root .4444444444444…=41

[/quote]

呢度已經有 countably infinite 咁多個 4 所以唔算。

Fed

Joined: 27 Mar 2004Posts: 12

Location: Txxxx Yx

Posted: Wed Aug 18, 2004 1:31 pm    Post subject:

.4 上面加一點之ma~

(係咪好奸呢~)

marco_dick

Frequent Visitor
Joined: 02 Nov 2003Posts: 164

Location: HKUST Maths

Posted: Wed Aug 18, 2004 1:36 pm    Post subject:

但我想個solution是可行的。我睇番規則,佢無話唔可以用.(包括小數點同循環小數點)。_________________人生每一步,都影響著下一步,在佛家上,稱為「業」。這不是「因」,因為「因」是絕對的,即每做「因」,必有「果」。

以前我不明白,但見奧雲在皇馬越打越好,我明白了。祝奧雲平步青雲!

Fed

Joined: 27 Mar 2004Posts: 12

Location: Txxxx Yx

Posted: Wed Aug 18, 2004 4:26 pm    Post subject:

用類似方法,應該好多數都出到

marco_dick

Frequent Visitor
Joined: 02 Nov 2003Posts: 164

Location: HKUST Maths

Posted: Thu Aug 19, 2004 10:24 am    Post subject:

你講得岩。我聽人講,話可以造出1~100出來。但我到而家都未諗到19點整。_________________人生每一步,都影響著下一步,在佛家上,稱為「業」。這不是「因」,因為「因」是絕對的,即每做「因」,必有「果」。

以前我不明白,但見奧雲在皇馬越打越好,我明白了。祝奧雲平步青雲!

Fed

Joined: 27 Mar 2004Posts: 12

Location: Txxxx Yx

Posted: Thu Aug 19, 2004 4:14 pm    Post subject:

4!-4/.444…+4_________________

人生若無難可解;必然也沒戲可唱

Kenny TM~

Frequent VisitorJoined: 20 Jan 2004Posts: 141

Posted: Thu Aug 19, 2004 8:36 pm    Post subject:

marco_dick wrote:

你講得岩。我聽人講,話可以造出1~100出來。但我到而家都未諗到19點整。

Copied from CLAMP, some here wrote:

11 = 44 / sqrt(4*4) 12 = 4*(4 – 4/4) 13 = 44/4 + sqrt(4) 14 = 4 + 4 + 4 + sqrt(4) 15 = 4*4 – 4/4 16 = 4 + 4 + 4 + 4 17 = 4*4 + 4/4 18 = (4+4)*sqrt(4) – sqrt(4) 19 = 4!-4-4/4 20 = 4*(4+4/4) 21 = 4!-4+4/4 22 = 4*4+4+sqrt(4) 23 = 4! – 4/sqrt(4*4) 24 = 4+4+4*4 25 = (4+4/4)^sqrt(4) 26 = 4!+4!/4-4 27 = 4!+4-4/4 28 = 4(4+4)-4 29 = 4!+4+4/4 100 = 4! * 4 + sqrt(4*4) 98 = 4!*4-sqrt(4)+4 97 = 4!*4+4/4 96 = 4!*4+4-4 95 = 4!*4-4/4 94 = 4!*4+sqrt(4)-4

93 = (