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教育王國 討論區 初中教育 Form 1 Maths, get answer
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Form 1 Maths, get answer [複製鏈接]

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5702
1#
發表於 13-10-25 10:42 |只看該作者 |倒序瀏覽 |打印
In a game, May throws  a coin 5 times. If the outcome is Head, she will get 3 points. If the outcome is Tailer, then she will get 2 points.

Q: Find May's maximum points if she got more heads than tails?


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2772
2#
發表於 13-10-25 13:27 |只看該作者
3*5+0*2=15

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5702
3#
發表於 13-10-25 14:04 |只看該作者
PINKAVA 發表於 13-10-25 13:27
3*5+0*2=15

It may have different ans.

A) Tails able to 0, -> 3*5+0*2=15
B) Tails not able to 0, -> 3*4+1*2=14
C) "Tails" means at least 2 -> 3*3+2*2=13

Which one is correct?

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1337
4#
發表於 13-10-25 15:19 |只看該作者
kls12 發表於 13-10-25 14:04
It may have different ans.

A) Tails able to 0, -> 3*5+0*2=15
題目係佢最高可以有幾多分,所以咪 A囉。

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5702
5#
發表於 13-10-25 16:25 |只看該作者
tommythumb 發表於 13-10-25 15:19
題目係佢最高可以有幾多分,所以咪 A囉。

問題是"FIVE HEADS" 是否在"more heads than tails"  有效?

有些人話tail=0是無效的

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8834
6#
發表於 13-10-25 19:18 |只看該作者

回覆:Form 1 Maths, get answer

問題係,究竟想教乜?咁都係中一數?



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5702
7#
發表於 13-10-25 21:22 |只看該作者
本帖最後由 kls12 於 13-10-25 21:26 編輯
JustAParent 發表於 13-10-25 19:18
問題係,究竟想教乜?咁都係中一數?

是中一數學,但重點不同 ,太深定太淺?
大部分人的答案是A,但官方答案是B,有些人的解釋是不可0.
但既然是捉字失,用'S'應該至少有2吧,所以覺得是C更合適.

是嗎?


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8834
8#
發表於 13-10-25 23:44 |只看該作者
kls12 發表於 13-10-25 21:22
是中一數學,但重點不同 ,太深定太淺?
大部分人的答案是A,但官方答案是B,有些人的解釋是不可0.
但既然是捉 ...

既然講得係數學科, 呢條題係中一課程邊個topic先, 我唔識classify, 所以我問究竟想教乜想考乜 ?

如果玩文字遊戲, 投降, 這是IQ題 ; 純數學考慮, 小三小四數一條, 答案當然是A, 中一太淺了吧.

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1384
9#
發表於 13-10-25 23:45 |只看該作者

引用:+本帖最後由+kls12+於+13-10-25+21:26+編輯

原帖由 kls12 於 13-10-25 發表
本帖最後由 kls12 於 13-10-25 21:26 編輯
The question is more head than tail that mean tail at least 1time, therefore head=4, so answer B is correct!



I love my dear husband and dear daughter.

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1384
10#
發表於 13-10-25 23:47 |只看該作者

引用:+本帖最後由+kls12+於+13-10-25+21:26+編輯

原帖由 kls12 於 13-10-25 發表
本帖最後由 kls12 於 13-10-25 21:26 編輯
咁又有道理喎



I love my dear husband and dear daughter.

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72
11#
發表於 13-10-26 11:51 |只看該作者
Zero is considered a number. For example, 1 is obviously greater than zero. If you have one pencil and your friend has none, then you have more pencils than your friend, right? With this reasoning, five is greater than zero. The original question never said anything about the number zero not being permitted, so the equation becomes (3*5)+(0*2)=15. If the number of tails must be at least one, it has not been clearly stated in the question.

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72
12#
發表於 13-10-26 11:56 |只看該作者
kls12 發表於 13-10-25 21:22
是中一數學,但重點不同 ,太深定太淺?
大部分人的答案是A,但官方答案是B,有些人的解釋是不可0.
但既然是捉 ...

In the English language, "s" as a suffix can also be used for quantities of zero.

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8834
13#
發表於 13-10-26 13:42 |只看該作者

引用:Quote:tommythumb+發表於+13-10-25+15:19+

原帖由 kls12 於 13-10-25 發表
問題是"FIVE HEADS" 是否在"more heads than tails"  有效?

有些人話tail=0是無效的
No need to complicate the question.  The meaning of "more than" is well defined in mathematical term, ie "greater than" or "addition".  Your "official" answer is definitely wrong.



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cow  同意!  發表於 13-10-26 19:06

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96
14#
發表於 13-10-28 00:07 |只看該作者
of course 15 la, they are learning the concept of directed numbers now
[IMG]http://i245.photobucket.com/albums/gg60/szebaba/sze.jpg[/IMG]
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